Linux Command grep, linux Command grep

Linux Command grep, linux Command grep

Grep command: print the line matching a style in the file

Format: grep [options] pattern [filles]

Options):

Options for style control:

-E: Extended grep, egrep

-F regex-file: Get the regular expression from the file, fgrep

-I: case insensitive

#cat argvs.sh #!/bin/bashecho $0 with $# args: "$*"index=1for arg in $*doecho Argument ${index} is: ${arg}let "index+=1"doneexit grep -i FOR argvs.sh for arg in $*

-V: only obtain results that do not match

 grep -v -i For argvs.sh #!/bin/bashecho $0 with $# args: "$*"index=1doecho Argument ${index} is: ${arg}let "index+=1"doneexit

Control output options:

-C: only the number of matched lines in the output file

# grep -c -i For argvs.sh 1

-L: only the file names matching the content are output.

grep -l do *.sh argvs.shps3_test.sh

-L: opposite to-l, the output content does not match the file name.

# grep -L for *.sh ps3_test.sh

-M num: Find num matching rows and stop searching.

grep -m 10 '\/etc' all.txt /etc/etc/securetty/etc/python2.6/etc/python2.6/sitecustomize.py/etc/bash.bashrc/etc/apparmor/etc/apparmor/severity.db/etc/apparmor/subdomain.conf/etc/apparmor/functions/etc/apparmor/logprof.conf

Options for the first grid of the output row:

-N: displays the row number of the output row in the file.

-H: No output file name

-H: output file name

 grep -H -n -m 10 '\/etc' all.txt all.txt:1:/etcall.txt:2:/etc/securettyall.txt:3:/etc/python2.6all.txt:4:/etc/python2.6/sitecustomize.pyall.txt:5:/etc/bash.bashrcall.txt:6:/etc/apparmorall.txt:7:/etc/apparmor/severity.dball.txt:8:/etc/apparmor/subdomain.confall.txt:9:/etc/apparmor/functionsall.txt:10:/etc/apparmor/logprof.conf

Pattern: Regular Expression

Files (File Name): the file name is not specified and is read from the standard input by default.

#grep -m 10 -n '^\/etc.*conf$' all.txt 8:/etc/apparmor/subdomain.conf10:/etc/apparmor/logprof.conf14:/etc/laptop-mode/conf.d/auto-hibernate.conf15:/etc/laptop-mode/conf.d/sched-mc-power-savings.conf16:/etc/laptop-mode/conf.d/cpufreq.conf17:/etc/laptop-mode/conf.d/start-stop-programs.conf18:/etc/laptop-mode/conf.d/hal-polling.conf19:/etc/laptop-mode/conf.d/configuration-file-control.conf20:/etc/laptop-mode/conf.d/dpms-standby.conf21:/etc/laptop-mode/conf.d/usb-autosuspend.conf

# grep -m 10 -n '^\/etc.*conf$' /etc .conf1:/etc .confee/et aa/etcdasdaweq/conf4:/etcdasdaweq/conf

Zookeeper