Linux System Administration 02

cat view the file content, which can simultaneously display a plurality of contents files
nl does not display empty rows
tac cat reverse display
more full-screen display mode paging file contents
less and more essentially the same, but more extension
part of the file view beginning of the head, the default display 10 line may add the option adjustment (plus - number, the number of rows can be customized)
tail end view of the part of the file, the default display row 10, may be added to adjust the options (plus - number, the number of lines can be customized) {-f option with when in use, also can track the end of the file content dynamically updated, real-time changes to facilitate the monitoring of file contents. Press Ctrl + C key combination to terminate}
Number wc statistics file for the word (Word Count) and the like
grep to locate and display lines in the specified character string file
egrep enhanced filtration
gzip compression, digital control options for compression level 1-9 The higher, the greater the digital compression level. Compressed file format is ".gz"
- the numbers 1-9 indicate the level of compression, using (commonly used compression level 6) and more when you create archive
gunzip to uncompress the .gz compressed file format. Gzip -d with the same function
bizp2 compression, digital control options for the 1-9 compression level, the larger the number the higher the compression level. Compressed file format is ".bz2" with gzip use the same, but the performance is higher than gzip
bunzip2 decompress .bz2 compressed file format as the
tar archive production, release archive (the first for the backup)
vi text editor
vim text editor an
rpm query the installed software information rpm
yum yum local warehouse (installed software)
./configure output using the command ./configure-help detailed list of options in the source directory to be mounted.
compiled to make it read instructions from the Makefile, then compile
make install to install, it also reads instructions from the Makefile, mounted to the specified location.
unmont launched
mount to mount
the computer comparing md5sum MD5 checksum, and the official offer, if not, may be damaged or being implanted source package program

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Origin www.cnblogs.com/sun0917/p/11317180.html