Python Gzip Decompress On The Fly

NET application, since the framework class library provides almost no support for the various Windows APIs for audio compression and decompression. InputStream will read data from another InputStream, given in the constructor, and encode/decode to/from Base64 notation on the fly. I am wanting to be able to do scp and then have t | The UNIX and Linux Forums. Gzip Reader. gz gzip: invalid option -- 'Y' gunzip -S-1800-01-01-000000-g01. I'm going to look at this purely from a consumer angle and not even look at gzip module source, from this angle (a consumer), zcat out performs it by a factor of 10 when gzip module is used with. Aside from your fishing license, a fly rod should be the first item on your beginner fly fishing gear list. In the next window, tick the check box Compress contents to save disk space under the Compress or Encrypt attributes section. You can vote up the examples you like or vote down the ones you don't like. I want to include a dll in my own program and make function calls to decompress these files. function package. codec data that's being decoded is gzip-compressed and will decompress it automatically. In all of these cases, Zstandard brings the ability to compress and decompress many times faster than gzip, with the resulting compressed data being smaller. 0 ASP Zip Component is ActiveX component offering high performance WinZip®, PKZIP®, and UNIX gzip compatible compression and decompression functionality. Sometimes this needs to be used in conjunction with other techniques, such as packet reassembly. Most times, the only choice made is to turn it on or off during configuration. These web servers will typically either respond with static files or proxy requests they receive off to a Node, PHP, Ruby, Python, Go, Java or other dynamic application that might be in place. The archive files are used for data compression. tar) format which is an container (archive) format. Using gzip on the Web. Read lines of the file. Compressing Individual Files. On-the-fly generated files that exist only in memory are also supported. NET Framework, including Managed Extensibility Framework (MEF), Charting Controls, CardSpace, Windows Identity Foundation (WIF), Point of Sale (POS), Transactions. htaccess in apache: "AddEncoding x-gzip. The compressed file can often be as big as 20G. Create archive in Zip, GZip, Tar format. Hi All I have 2 tar files and inside a Gzip file (actually its folder) that i got from a Unix user to check the code for him and find some problem. This would reduce network usage. The default is true. If the files doesn't exist, and you have gzip on; in your config, Nginx will read the ROOT/static/foo. py26-dbus-python - 0. 3-0, OS X 10. RawIOBase), but wraps another stream and compress it on-the-fly. 1 Unzip Mac utility can be used to zip and unzip Mac files on all popular versions of Mac Leopard and Snow Leopard etc. htaccess in apache: "AddEncoding x-gzip. The Chilkat. Here's a Python script that takes a zip file as standard input and extracts the contents to the current directory or to a specified directory if specified. The answer: in that context it refers to a compression scheme 2) Look for a) source code or b) library (preferably a widely used one), which does that. On Fedora/Redhat/CentOS the less command seems to magically detect a gzipped file and decompress it on the fly, so you can do: less my_stuff. mkZiplib is a wrapper for Zlib 1. z - compress the backup file with 'gzip' to make it smaller. Python 2 to 3 porting notes for bz2. gzip — Support for gzip files¶ This module provides a simple interface to compress and decompress files just like the GNU programs gzip and gunzip would. function package. esriaddin file - which is actually just a zip file (seriously, change the extension to from. 'bgz' isn't a recognizable file extension and gzip/gunzip do not allow that. In the above example the file file1 was compressed with gzip before it was encrypted with mcrypt. Compression namespace - DeflateStream and GZipStream - enable developers to compress or decompress files using DEFLATE and to compress or decompress data using the gzip file format. GitHub Gist: star and fork officialpatterson's gists by creating an account on GitHub. Now I have a follow up question: is it possible to read in SAS a GZIP compressed FOLDER with several text comma delimited files?. I've got pretty much the same functionality as you except it mine de/compresses on the fly. As such, I used the python gzip module to decompress the source file on the fly and read it line by line while using cx_Oracle to load the rows. In my last post about producing a version of Fleshcult that runs locally in the browser rather than on a server, I was wrestling with the need to translate all the Python code into Javascript. Mcrypt also offers an option to compress files with gzip before the actual compression takes place. to compress/decompress. We can uncompress and serve a file on the fly. how to optionally handle and decompress gzipped input files on the fly with python - optionally-handle-gzip-files. It's also pretty limited. This routine adapts to the codes in the * file building the "string" table on-the-fly; requiring no table to * be stored in the compressed file. Some of the features described here may not be available in earlier versions of Python. Did you know that you can use Python to compress or extract files? This tutorial will teach you how to use the zipfile module in Python, to extract or compress individual or multiple files at once. For example, when you need to decompress and shred XML and use some of its elements in a where clause of the query. The gzip command has different options, allowing for changes of the compression ratio or the running time of the program. Well, at least we now know that it works. The gzip utility is used to compress various other data on the ftp site as well. GnuPG is a complete and free implementation of the OpenPGP standard as defined by RFC4880 (also known as PGP). One possibility to compress the JavaScript source on server side is to use PHP. In Python, you would use the zipfile module. The gzip command reduces the size of the files using Lempel-Ziv coding (LZ77). With mkZiplib you can compress/decompress data on-the-fly and work with. zip file from the Github public repo on my Linux VPS hosted at AWS. The following are code examples for showing how to use gzip. Refer to the comments at the top for more information. You can vote up the examples you like or vote down the ones you don't like. In above example, we are inserting compressed data in SQL Server. In Python, we can use the gzip module. In terms of how it’s used on the web, it’s easiest thought of a way that makes your files “smaller”. It turned out the PC needed a reboot after the installation of GZIP (duh!), which I did perform, but the other user did not, since the GZIP installation did not prompt for it. The example is for GZIP. They also don't announce that they do, so they won't ask for compression even if enabled for the pdf mime type (or extension in IIS6). The software is designed to be flexible, scalable, and compatible with other Python toolkits that are used in the molecular simulation and analysis field such as MDAnalysis. And: We open the source file and then open an output file. Decompress mysql dumps on the fly using python subprocess … #1417 abadger merged 3 commits into ansible : devel from fdupoux : mysql-db-use-python-pipelines May 26, 2015 Conversation 3 Commits 3 Checks 0 Files changed. , by gzip) can operate in streams, allowing compression and decompression on-the-fly. the gzip "ecosystem" is rich and useful, despite not being the best compressor in terms of compressed size. It it used by local mode and can function without the rest of the mrjob library. Well, at least we now know that it works. Check out " HTTP Compression Speeds up the Web " as Peter Cranstone deals with the IETF's standard for compressing HTTP contents through two levels of encoding. similar to what you can do with gzip when you compress a pcap file. Since I have files that I rarely change, I want all the benefits of a small file size, with none of the CPU strain. My favorite IDE for Python is PyCharm by JetBrains and I use it to debug. cpio archives can be piped through compressors. NET version which can run on different Operating systems and different devices from desktops to embedded devices. Video to Audio/Mp3. The data compression is provided by the zlib module. After a long investigation we found other libraries that were more reliable. How to use HDF5 files in Python HDF5 allows you to store large amounts of data efficiently. Sadly, Python's gzip library is a bit confusing to use. AWS download in Java As we are not using an SDK, and we must handle the redirection manually, the code is slightly more involved. DataTables 1. 0-1 - A library of helper functions intended to make writing templates in web applications easier. Decompress gzip File # python 3 # decompress a gzip file import gzip input = gzip. Loading HDFITS files in python ¶ Functions to read / write HDFITS files into an in-memory data object in python are located in fits2hdf. It has two functions: compress() and decompress (). As you "read" from the GzipFile instance, it will "read" compressed data from the remote HTTP server and decompress it on the fly. You can't "gzip the whole thing" as gzip only compress one file, you could create a tar file and gzip it to "gzip the whole thing" but you would loose rsync capability of copying only modified file. Because of the way gzip compression works, GzipFile needs to save its position and move forwards and backwards through the compressed file. c file located in 100s of sub-directories and move them to another directory called ~/old. These commands allow you to read gzip compressed text files using zless, zcat, zmore and friends commands. (I get the same result in CPython 2. Read the video data out of flash, decompress it, and send it to the NeoPixels on the fly. This can be more efficient for handling several small files but should not be used for many large files (e. Gzip in new file - LinuxQuestions. Z compression, and creating self-extractor EXEls. js into memory, compress it (usually with a lower compression level) and return that. The gzip command has different options, allowing for changes of the compression ratio or the running time of the program. They are extracted from open source Python projects. (CkPython) GZip Create / Extract. Conceptually, Mako is an embedded Python (i. This statement ensures that system. pyPcazip is a Python software code that provides command-line tools for the compression and analysis of molecular dynamics trajectory data using PCA methods. The numbers beside each compression algorithm (e. How the test files were selected. No temporary files are used. Simple compress and decompress subroutines can be linked and called within applications to compact or unpack data on the fly or stand-alone. 3" (RFC 1952, Network Working Group, May 1996) for details on the publicly available gzip compression format. The framework currently only reads from zip files. 바로 반영할 수 있는 바이트코드 컴파일러. gzip_5 and brotli_5) refer to the level of compression. plus, I found that a lot of things are handled automatically - on the client side I just post a gzip read. You may not have seen this behavior with other web servers that use the older syntax "Content-Type: x-gzip", which Unix Netscape handles ok. Hi All I have 2 tar files and inside a Gzip file (actually its folder) that i got from a Unix user to check the code for him and find some problem. Z compression, and creating self-extractor EXEls. Create ZIP archives dynamically and on the fly with Perl. Although program was a bit long, we actually just used Python modules open the file and stream the content on to the console with a buffered reader object. So far Brotli showed the best compression ratio, with decompression performance comparable to gzip. The data contains the complete edit history (all revisions, all pages) of all Wikipedia since its inception till January 2008. A properly gzipped file starts with 1F8B. gunzip does not delete the original GNU zip files. This combination will try to iterate through the FileWrapper object several times, but the iterator will return nothing after the first pass, and the HTTP response received by the client will be empty. The kwatee maven plugin makes it easy to integrate kwatee's configuration management and deployment capabilities within your development environment. Other file types such as JPEG images and MP3 audio files do not compress at all well and the file may actually increase in size after running the gzip command against it. Also it's CLI based because I'm not super familiar with GUI programming. Add this to. To load the datafile back into an instance of the Level class, you would need the class definition for the Level class. Is there a special compile option to change it? Or can I do a save script in. 0 didn’t support u'' strings. Note that additional file formats which can be decompressed by the gzip and gunzip programs, such as those produced by compress and pack, are not supported by this module. import a python module structure including underlying Java classes from a jar-file, that is dynamically loaded using the function load(jar-file) automatically access images contained in the imported. Instead of letting the user place operators (or actors in ADAMS terms) on a canvas and then manually connect inputs and outputs, ADAMS uses a tree-like structure. gz file in a destination directory. Here's a Python script that takes a zip file as standard input and extracts the contents to the current directory or to a specified directory if specified. cpio archives can be piped through compressors. But by using Content-Encoding gzip, the burden of unzipping is on the user of the API. sql, then compress that stream back to STDOUT | gzip -c. Click the ZipSend button and select the files you wish to email. The gzip module provides the GzipFile class which is modeled after Python’s File Object. Python gzip module provides a very simple way to compress and decompress files and work in a similar manner to GNU programs gzip and gunzip. You'd think so, but allow me to point at my steamapps folder saving 20% disk space even with the not-very-good compression that NTFS offers. (This compression method is also known as "deflate". What basically needs to happen here, is to identify the data that needs conversion, take that data and transform it into a new stream, and then call a dissector on it. Especially for dynamic apps it could be a good approach. gz - Linux Tar Command - HowTo: Extract Tar File Posted on Tuesday December 27th, 2016 Sunday March 19th, 2017 by admin Most of the Linux files that can be downloaded from the Internet are compressed with a tar , tar. PeaZip Portable is the PeaZip file archiver packaged as a portable app, so you can take your file archiver with you and work with your compressed 7z, ZIP, GZIP, BZIP2, TAR, RAR files and more on. this application allow the user to capture video and edit on the fly without any limitation. Gzip Compress/Decompress. It is not perfect, but it gets the job done. pwd() geo = node. GzipFile (fileobj=f). It is based on the DEFLATE algorithm, which is a combination of LZ77 and Huffman coding. NET Core library to uncompress gzip file stream chunk by chunk? I'm not sure my title is correct, but what I'm trying to do is uncompress a gzipped file on the fly in memory without having to either load the whole file in memory first or downloading it to the hard drive. SAS Compress will squish records with consecutive identical bytes, and will get something like a 10% compression rate [it varies depending on your data, of course]. While there are different weights of fly rods you can use depending on the fish species you plan to target, two of the most versatile fly rod weights are a 6-weight fly rod or a 7-weight fly rod. NET Framework Also discuss all the other Microsoft libraries that are built on or extend the. a206ec6bd8c7. I have created a python system that runs Linux core files through the crash debugger with some python extensions. PHP HTTP Clients and on the fly gzip compression. compress filter accepts up to two parameters given as elements of an associative array: blocks is an integer value from 1 to 9 specifying the number of 100kbyte blocks of memory to allocate for workspace. gzip-stream. Python Search file for string and read into list. On a Mac, where QGIS uses the Kyngchaos. Adjusting track volume on the fly Post by RhettMusician » Fri Aug 16, 2019 5:35 pm Is there anyway to use, for instance, a keyboard shortcut to adjust the individual track volume while in set list mode?. The format of your file looks like the Order Switchable Column Table (OSCT) format, but this format requires that "the first line after the comments/meta-data (see below) is a header line, which indicate column names of the table". 11, PPP/HDLC, ATM, Bluetooth, USB, Token Ring, Frame Relay, FDDI, and others (depending on your platfrom) Decryption support for many protocols, including IPsec, ISAKMP, Kerberos, SNMPv3, SSL/TLS, WEP, and WPA/WPA2. Check out " HTTP Compression Speeds up the Web " as Peter Cranstone deals with the IETF's standard for compressing HTTP contents through two levels of encoding. It’s a just-in-time compiler to. 0 programming guide in Java, Scala and Python. See for yourself: Python. com offers free software downloads for Windows, Mac, iOS and Android computers and mobile devices. tar time gzip -1v linux-3. # Use drop down menu to select examples. suf --suffix. If that is the case you are likely dealing with a faulty comparison operation. On Fedora/Redhat/CentOS the less command seems to magically detect a gzipped file and decompress it on the fly, so you can do: less my_stuff. For example, social networks include community groups (the origin of the term, in fact) based on common locations, hobbies, occupation, etc. They can also be used without the GUI. xml requests. Its written Python so it should run on we every platform. Now we can dump the actual python. deflate (compression) and zlib. Ability to compress nbackup output on the fly helps to save both backup time and avoid need in disk space for intermediate uncompressed files: nbackup -b 0 employee stdout | bzip2 >e. GZIP is a variation of the zip format (. It is possible to zip/unzip on the fly using streaming option of aws cli. csv) on this server so that I Linux, Unix ,Open Source › Centos Discussion and Information. create_dataset() keyword shuffle to True. Your typical input video would have H. This produces great results for most developers, and is easy to use. 2 crashes when testing the example python dissector because of a dissector count assertion. htaccess in apache: "AddEncoding x-gzip. gzip - A file-like interface to GNU zip compressed files. If `-f' is not given, and when not running in the background, gzip prompts to verify whether an existing file should be overwritten. What JBoss Fuse Brings to Red Hat’s Customers: !Integration that extends to the edges of enterprise Easy to deploy – sophisticated tooling, connectors,small footprint makes it easy to deploy with less hardware and. Presenting the Solaris ZFS filesystem, as implemented in Linux FUSE, native kernel modules and the Antergos Linux installer. The following are code examples for showing how to use zlib. On Python 2. Also it works very quickly even with big files. You can also save this page to your account. NET Core library to uncompress gzip file stream chunk by chunk? I'm not sure my title is correct, but what I'm trying to do is uncompress a gzipped file on the fly in memory without having to either load the whole file in memory first or downloading it to the hard drive. Creates new zip files or update existing zip files in stream (can be on disk or in memory stream, buffer). As such, I used the python gzip module to decompress the source file on the fly and read it line by line while using cx_Oracle to load the rows. It turned out the PC needed a reboot after the installation of GZIP (duh!), which I did perform, but the other user did not, since the GZIP installation did not prompt for it. 1 emulation layer for 32-bit Microsoft Windows operating systems. It really depends on if your server is more bandwidth limited or CPU limited if it's worth turning on or not. EDIT2: BTW. static class: Base64. A pure Python cross-platform program to send and receive data over local area network(LAN) with on-the-fly gzip streaming and broadcasting Skip to main content Switch to mobile version Warning Some features may not work without JavaScript. You will notice that you passed the flag -xvf to the command to extract the archive. For example, if you run diagnostics, the script fails with "BackEndBusy Exception". Often the file is a tar (. the file seems to be ok. ziproxy compresses (gzip) data from the web, and sends it via squid over the slow/expensive link, usually also having a squid at the other end, serving the clients. You should optimize your WordPress site and server for the best possible outcome. compress and bzip2. Standard Formats. Enabling the shuffle filter rearranges the bytes in the chunk and may improve compression ratio. This saves disk space, at the cost of slower execution times. 0, a free graphy library. You can use it as a reverse proxy, making for easy integration with slower upstream servers (like Unicorn or Puma). Both compress and gzip reduced the input file size by at least 70 percent using Lempel-Ziv coding. And Oracle Database 10g Release 2 gives Oracle Database on Windows the ability to partially compress DMP files on the fly for the first time (named pipes are a feature of UNIX. If it decompress the data successfully, it’ll treat those data as python code and execute it. bmp' if the browser supports it. See for yourself: Python. 04 installation of a Python-only Machine Learning Server configured for operationalization, the compute node eventually fails. Network Analyst Python module. You'd think so, but allow me to point at my steamapps folder saving 20% disk space even with the not-very-good compression that NTFS offers. GZip is an easy choice because it is available within. plus, I found that a lot of things are handled automatically - on the client side I just post a gzip read. See the complete profile on LinkedIn and discover Hugh’s connections. GnuPG is a complete and free implementation of the OpenPGP standard as defined by RFC4880 (also known as PGP). A database of open-source HTTP proxies written in python: WebCleaner About this site This site presents a list of open source HTTP proxies written in java and python , with comparison tables, so that you compare the proxies on a feature by feature basis. Laravel is many things. Well, sorta. The compressor to be used for each format is configurable at runtime. Ultimately, I think the user should be given a choice: if the server is providing compressed data, and the user wishes to save that data to a file, we should ask the user if they want the data in the. By default, netcat creates a TCP socket either in listening mode (server socket) or a socket that is used in order to connect to a server (client mode). This means that Python is not compiled into an executable program before it is run. Rolling your own Smaller GZIP files Most developers simply upload uncompressed content and rely on the web server to compress data on the fly. While a zip file is in fact a container format, there's no reason why it can't be read from a pipe (stdin) if the file can fit into memory easily enough. It is not that noticeable when you need to decompress the single or very few rows; however, it could be very significant on the large data sets. For pages constructed on the fly, the server software may defer requests to separate programs and relay the results to the requesting client (usually, a web browser that displays the page to the end user). 2-1 - A high-level Python Web framework that encourages rapid development and clean, pragmatic design. Seems that the "less" command in my linux box will decompress the gzip file on-the-fly for easy viewing. The zlib and bz2 modules provide functions for compression and decompression of files or streams. It tells tar the name and path of the compressed file. It is not perfect, but it gets the job done. GZIP is a generic compression method that can be applied to any stream of bits. bz2] files "on fly", without saving archive themselves. Synchronize the contents of any number of folders and files? This library lets you easily do it with small amounts of elegant code. Mcrypt also offers an option to compress files with gzip before the actual compression takes place. read() [/code]. For gzip it’s kind of inefficient. Y P K Valu e Offs et A C D [ ] X Y B B • Transforms and adds new columns, types, and tables on-the-fly • Tracks keys and foreign keys across runs • SQL on the relational schema is orders of magnitude faster than JSON processing 22. NET Zip Component Developer Tools, Commercial, $149. gz extractor. Additionally, I worked with DotNetZip but again, this is a complex library that is really designed to work with Zip files - not necessarily to compress and decompress in-memory data "on the fly". It supports to unzip files like documents, images, media files, folders and By using this application you can compress and unzip a very large size zip file within few. This falls right in the middle of the decompress speed zone of the CPU, so performance might be slightly lower as the CPU might be receiving some data faster than it can decompress it - leading to a stutter. 116 Comments It’s a passive attack that only triggers if you try to download the zip file and decompress it and it is placed on the server where. zipped_input = streamingzip. Following a query about the performance of reading compressed data, some benchmarking details have been collected at fabio_compressed_speed. mkZiplib is a wrapper for Zlib 1. Are you trying to manually gzip your files ? O_o This is done on-the-fly by apache server, follow the directions on the link I provided. Only regular files with standard file name extensions are recompressed, other files are ignored. zupdate is similar to gzip's znew. If it cannot compress the string down to the requested size is to return None. These commands allow you to read gzip compressed text files using zless, zcat, zmore and friends commands. zcat, zcmp, zdiff, and zgrep are improved replacements for the shell scripts provided by GNU gzip. gzip_5 and brotli_5) refer to the level of compression. - Top4Download. gz (pair of files, either nifti or analyze). Warning: Loading pickled data received from untrusted sources can be unsafe. O algoritmo fornece uma taxa de compressão pouco pior do que o do algoritmo LZO – que por sua vez é pior do que algoritmos como o gzip. gzip was designed to compress a single file and therefore is not suitable for creating an archive of compressed files. What all of this means, of course, is that if the server is not reporting the content type as application/gzip then we should decompress. The GzipFile class reads and writes gzip-format files, automatically compressing or decompressing the data so that it looks like an ordinary file object. Toggle navigation. JIT 컴파일러는 바이트 코드를 즉시 반영할 수 있도록 컴파일한다. GZIP is better at compressing dynamic data because of its often superior compression speed; Akamai also notes that, if you play around with the Brotli settings, you can get compression speeds that rival GZIP while also benefiting from a better compression ratio. Generally things are cleaner. It does not replicate data it compresses it on the fly. Python modules are typically compiled into bytecode (*. Zutils uses external compressors. They also don't announce that they do, so they won't ask for compression even if enabled for the pdf mime type (or extension in IIS6). You can vote up the examples you like or vote down the ones you don't like. gzip - A file-like interface to GNU zip compressed files. After a bit more testing I've discovered this is somehow connected to automatic compression of the data transferred to the client. compress() accepts a string to compress and an optional maximum length for the output. Linuxquestions. Ability to compress nbackup output on the fly helps to save both backup time and avoid need in disk space for intermediate uncompressed files: nbackup -b 0 employee stdout | bzip2 >e. Compressed Gzip files can be decompressed on the fly; Output can be exported to plain text, XML, or CSV ; Multi-platform: Runs on Windows, Linux, FreeBSD, NetBSD, and many others; Live data can be read from PPP/HDLC, internet, ATM, Blue-tooth, Token Ring, USB, and more. tar archives can go to any type of media, including local or remote tape, local or remote disk directory, or any combination. Python Pickle Files. If the input data is not in a format recognized by gzip, and if the option --stdout is also given, copy the input data without change to the standard ouput: let zcat behave as cat. It was developed with a focus on enabling fast experimentation. Also recompressing the dump is wasting resources and it can take a long time on large files. Shell scripting hearkens back to the classic UNIX philosophy of breaking complex projects into simpler subtasks, of chaining together components and utilities. class files, plus whatever other resource files you want like html files, js files, etc…. Also, right now rav1e is focused on speed so most useful for testing purposes. Apparently I have a small problem with a ZIP data format. Now I have a follow up question: is it possible to read in SAS a GZIP compressed FOLDER with several text comma delimited files?. Once all the content has been compressed, the original uncompressed file is removed, leaving only the compressed version (the original file name plus a. Predefined dimensions for space and time. Unzip Mac 1. Otherwise, best of luck serving pre-compressed files with Apache! Article Changes 2017-01-20. Xtrabackup works by copying your data files on the fly, which results in data that is internally inconsistent as the files are usually being. Top 4 Download periodically updates software information of decompress full versions from the publishers, but some information may be slightly out-of-date. 5, zcat was much faster than gzip (see here)I guess that has changed (at least according to a comment in that post)?. The answer to this: zlib. Manual decompression is not needed before loading, because Java can compress and decompress gzipped files on the fly. So the question is: is it better to store file I need to rsync gziped or rely on -z option of rsync. After a bit more testing I've discovered this is somehow connected to automatic compression of the data transferred to the client. Hi, I searched a little bit with google but I could not find any code or extensions to compress an SQLite database on the fly. NET Framework 4. If one of them exists, then serve it. direct decompress Virtually everything would be faster if done directly in Squid. gz' , compression = 'gzip' ) >>> array = adapter [:] Aside from the obvious advantage of being able to store and work with your compressed data without having to decompress first, you also don't need to sacrifice any performance in doing so. Your bottleneck is probably that you write the file to disk first and then read it again (I/O). For a long time I wondered how R was able to recognize gzipped files and decompress them on the fly. 1) do a search within the script to find any instances of gz functions (gzcompress, gzdeflate, gzdecode, etc). bz2 nbackup -b 1 employee stdout | bzip2 >e. f - specifies where to store the backup, backup. Z files in the background. The second recursive script achieves the same result faster by creating a new CSV file as before, containing 3 fields (Country,Begin,End), and then performs recursive range splitting "on the fly" within awk itself, for each country, to generate the GeoIP. RawIOBase), but wraps another stream and compress it on-the-fly. 05: Some speed optimiztions in LZMA/LZMA2 code. readline (self, size=None) ¶ NOT IMPLEMENTED. The answer to this: zlib. NET Core is. You'll probably have to change some method calls that you were making to support the new options format ( int s that you "OR" together).