Linux-grep command

Example 1: find the specified process command: Ps-ef|grep SVN output:[[email protected] ~]# Ps-ef|grep Svnroot4943 1 0 Dec05? 00:00:00svnserve-d-r/opt/svndata/grape/root16867 16838 0 19:53 pts/0 00:00:00grep svn[[email protected] ~]#说明: The first record is the process of finding out; the second result is the grep process itself, not the process you are really looking for.
Example 2: find the specified number of processes command: Ps-ef|grep svn-cps-ef|grep-c svn output:[[email protected] ~]# Ps-ef|grep Svn-c2[[email protected] ~]# ps-ef|grep-c SVN2[[email protected] ~]#实例3: read keywords from file search command: Cat test.txt | grep-f test2.txt output:[[email protected] test]# cat Test.txt hnlinuxpeida.cnblogs.comubuntuubuntu linuxredhatredhatlinuxmint[[email protected] test]# cat Test2.txt linuxredhat[[email protected] test]# cat Test.txt | grep-f test2.txthnlinuxubuntu linuxredhatlinuxmint[[email protected] test]#说明: The output test.txt file contains the content lines of the keywords read out from the Test2.txt file
Example 4: read keywords from a file search and display line numbers command: Cat Test.txt | GREP-NF test2.txt Output:[[email protected] test]# cat Test.txt hnlinuxpeida.cnblogs.comubuntuubuntu linuxredhatredhatlinuxmint[[email protected] test]# cat Test2.txt linuxredhat[[email protected] test]# cat Test.txt | grep-nf test2.txt1: Hnlinux4: Ubuntu Linux6: Redhat7: LinuxMint[[email protected] test]#说明: The output test.txt file contains the content lines of the keywords read from the test2.txt file, and displays the line numbers of each row
Example 5: find keywords from file command: grep ' Linux ' test.txt output:[[email protected] test]# grep ' Linux ' test.txt hnlinuxubuntu linuxlinuxmint[[email protected] test]# grep-n ' Linux ' Test.txt1: Hnlinux4: Ubuntu Linux7: LinuxMint[[email protected] test]#实例6: find keyword commands from multiple files : grep ' linux ' test.txt test2.txt output:[[email protected] test]# grep-n ' Linux ' test.txt test2.txt test.txt:1: hnlinuxtest.txt:4: Ubuntu linuxtest.txt:7: linuxminttest2.txt:1: Linux[[email protected] test]# grep ' Linux ' test.txt test2.txt test.txt:hnlinuxtest.txt:ubuntu linuxtest.txt:linuxminttest2.txt:linux[[email protected] test]#说明: When multiple files are output, the name of the file is printed at the front of the row and added":"as a marker
Example 7:grep does not show itself the process command: PS aux|grep \[s]shps aux | grep ssh | grep-v"Grep"Output:[[email protected] test]# PS Aux|grep sshroot2720 0.0 0.0 62656 1212? Ss Nov02 0:00/usr/sbin/sshdroot16834 0.0 0.0 88088 3288? Ss 19:53 0:00 sshd: [Email protected]/0Root16901 0.0 0.0 61180 764 pts/0 s+ 20:31 0:00grep ssh[[email protected] test]# PS Aux|grep \[s]SH][[email protected] test]# PS Aux|grep \[s]Shroot2720 0.0 0.0 62656 1212? Ss Nov02 0:00/usr/sbin/sshdroot16834 0.0 0.0 88088 3288? Ss 19:53 0:00 sshd: [Email protected]/0[[email protected] test]# PS aux | grep SSH | Grep-v "grep"Root2720 0.0 0.0 62656 1212? Ss Nov02 0:00/usr/sbin/sshdroot16834 0.0 0.0 88088 3288? Ss 19:53 0:00 sshd: [Email protected]/0Example 8: find the line content that has the U start command: Cat test.txt |grep ^u output:[[email protected] test]# cat Test.txt |grep ^uubuntuubuntu linux[[email protected] test]#
Example 9: output A line content that does not start with a U command: Cat test.txt |grep ^[^u]Output:[[email protected] test]# cat Test.txt |grep ^[^u]Hnlinuxpeida.cnblogs.comredhatRedhatlinuxmint[[email protected] test]#实例10: Output the line content command ending in hat : Cat test.txt |grep hat$ output:[[email protected] test]# cat Test.txt |grep hat$redhatredhat[[email protected] test]#实例11: Command: Output:[[email protected] test]# ifconfig Eth0|grep "[0-9]\{1,3\}\. [0-9]\{1,3\}\. [0-9]\{1,3\}\. [0-9]\{1,3\} "inet Addr:192.168.120.204 bcast:192.168.120.255 mask:255.255.255.0[[email protected] test]# ifconfig Eth0|grep-e "([0-9]{1,3}\.) {3} [0-9] "inet Addr:192.168.120.204 bcast:192.168.120.255 mask:255.255.255.0[[email protected] test]#实例12: displays a content line command containing an Ed or at character : Cat Test.txt |grep-e"Ed|at"Output:[[email protected] test]# cat Test.txt |grep-e "peida|com"peida.cnblogs.com[[email protected] test]# cat Test.txt |grep-e "Ed|at"Redhatredhat[[email protected] test]#实例13: Displays the line command for all strings that contain at least 7 consecutive lowercase characters for each string under the current directory in a file that ends in. txt : grep '[A- z]\{7\} ' *.txt output:[[email protected] test]# grep '[A- z]\{7\} ' *.txttest.txt:hnlinuxtest.txt:peida.cnblogs.comtest.txt:linuxmint[[email protected] test]#

Linux-grep command