Linux Common Command Learning record

Brother even Linux training

, a small compilation of common Linux learning Commands:

　　1 CP Copy command

Parameter:-p file attributes are copied together

　　- r Copy Folder

　　- D Soft chain information, etc. copy together

　　 -A is a shorthand for -rdp

　　2 Find File lookup commands

Normal search by file name ( exact lookup )

　　Find/home-name xx.xx

General Branch file name lookup ( fuzzy Matching, support:? Single character ),* ( multiple characters ),[] ( matches a specific content in brackets) )

　　find/home-name "*.xx" all files ending with . XX

Find based on the user who owns the file

　　Find/home-user sls0919 Find all Files sls0919 the user

　　Find/home-nouser Find files without owner in home directory ( Approximate rate is junk file )

Find by File size

　　find/home-size +25k find files larger than 25k in home directory ( plus sign is greater than, minus indicates less than, no symbol equals )

Find by File date

　　find/home-mtime +25 Find files modified in the home directory ( plus sign is greater than, minus is less than, no symbol equals ; mtime) : Modify content time,atime: Access time,ctime: Modify attribute time )

Multi-criteria Lookup connection symbol (A==and,o==or)

　　find/home-mtime +25-a-size-25k Find files that were modified in the home directory and smaller than 25k in size

　　find/home-mtime +25-o-size-25k Find the contents of the home directory modified or smaller than 25k file size

Query the results and execute the action command (-exec {}\;)

　　find/home-mtime +25-a-size-25k-exec ls-lh {}\; List details of files modified in the home directory and smaller than 25k in size

　　3 grep Text Lookup command

　　 -I ignores case

　　- v excludes the specified string

　　- C calculates the number of times the specified string was found

　　- n output shows line number

　　grep-r ' Test ' * searches the current directory and its subdirectories for files of ' test ' lines

　　grep-l-R ' Test ' * searches the current directory and its subdirectories for files of ' test ' lines, but does not display matching rows, showing only matching files

　　grep-n ' t[ae]st ' data.txt find information for test or tast in file data.txt ( refer to Regular expression )

　　4 man and help command

　　Mans LS

　　LS--help

　　5 zip, gzip, bzip2, tar compress unzip command

　　Zip Compressed file name source file

　　- R Compression directory

　　gzip and bzip2 are both compressed files and cannot be on the directory

Common methods:

　　TAR-CVF Compressed file name source file source file source file can be multiple

　　- C Compression

　　- x Decompression

　　- v Show compression process

　　- F Specifies the file name after packaging

　　- z compression decompression . tar.gz Type File

　　-j Compression decompression . tar.bz2 Type File

Linux Common Command Learning record