how to compress file in unix

"Unix environment advanced programming" chapter 3rd-file I/O, unix environment Advanced Programming1. Introduction For most Unix files, I/O only requires five functions: open, read, write, lseek, and close. The functions described in this chapter are often calledI/O without buffering. TermsWithout BufferingIt means

File compression and packaging in linux --- compress, gzip, zcat, bzip2, bzcat, tar, find, tarfile, tarball, --- compresszcatCommon Linux compressed file extensions *. Z compress compressed files (replaced by gzip) *. Gz gzip compressed files *. Bz2 bzip2 compressed files (better than gzip, but only one

Chapter 23rd UNIX File SystemNamed pipe Mkfifo:mkfifo [-M mode] pipe. Named pipes must be created explicitly and will not disappear (the RM command can be removed).The proc file is a pseudo-file used to access kernel information. For example, if a process ID is 1952, the process-related information can be found in a

1:unix file Type-3 typesNormal files (regular files): Text files (plain text, scripts, source programs, configuration files, HTML, etc.), binary files (multimedia files, databases, etc.)Directories: for organizing filesPseudo-file: does not store data for the purpose of providing a service. Divided into three kinds:Special files: Device drivers,

Today in Aix with TAR-CVF backup, make a tar package, occupy the hard disk space is too large, no compression ratio, Try to use the TAR-ZCVF Linux system can use the-z command (z with gzip to compress/extract the file, plus this option to compress the archive file, but the restore must also use this option for decompr

[UNIX] the generation of an executable file to the distribution (on) of processes in the memory/the generation of executable files, unix executable files From the generation of an executable file to the distribution of processes in the memory (on) Generation of executable files To generate executable files for a source

Use php zlib to compress and decompress the swf file. The following example shows how to compress and compress a swf File. if the swf file is not compressed, the first byte of the file

# CD/USR/SRC # tar Xvzf apache_1.3.6.tar.gz (Generate apache_1.3.6 directory) # tar Xvzf php-3.0.8.tar.gz (Generate php-3.0.8 directory) # CD apache_1.3.6 #./configure--prefix=/usr/local/apache (Set the Apache installation directory to/usr/local/apache) # CD php-3.0.8 #./configure--with-mysql=/usr/local/mysql \ --with-apache=. /apache_1.3.6 \ --enable-track-vars (configuration support MySQL, as Apache function module, tracking variable valid) # make; Make install In the Configure parameter above

File compression and packaging in linux --- compress, gzip, zcat, bzip2, bzcat, tar, find, tarfile, tarballCommon Linux compressed file extensions *. Z compress compressed files (replaced by gzip) *. Gz gzip compressed files *. Bz2 bzip2 compressed files (better than gzip, but only one

/proftpd/proftpd.log log tar command 1. Action The TAR command is a reliable method of backing up files in a unix/linux system and can work almost anywhere, with permissions for all users. 2. Format tar [main options + auxiliary options] File or directory eg: tar zxvf libiconv-1.13.tar.gz ./libiconv tar cxvf libic onv-1.13.tar.gz./*.php 3. Main parameters When you use this command, the m

Common Linux Compressed file extensions*. Z Compress compressed files (has been replaced by gzip)*.gz gzip Program Compressed files*.BZ2 BZIP2 Program Compressed files (better than gzip, but only for one file to compress)*.tar Tar program packaged data, no compression (using tar to package a