Grep is a powerful tool. It can do many things well. It can also be used in conjunction with other tools. If you are new to grep, it is a supercharged search tool. The basic format of the command is:<\/p>\n
grep [options] PATTERN [FILE…]<\/p>\n
Many options are available and described in the man page, so I won’t go into them here. I will just list some of my favorite grep commands. (who am I kidding? I just want a place to copy them from when I am not at my own computer)<\/p>\n
#This command searches for a string and includes the preceding 5 lines and the 5 lines that follow it and shows the line numbers as well.<\/p>\n
#This command uses grep to traverse the output from a find command. #This command allows you to output a sorted list of connections from the month of Mar 2013 #Finding warnings and errors in your log Grep is a powerful tool. It can do many things well. It can also be used in conjunction with other tools. If you are new to grep, it is a supercharged search tool. The basic format of the command is: … Continue reading grep -n -B5 -A5 searchstring \/tmp\/filename<\/code><\/p>\n
\nfind . -exec grep searchstring {} \\; -print<\/code><\/p>\n
\ngrep Mar\/2013 \/var\/log\/apache2\/access.log |\u00a0 awk ‘{ print $1 }’ | sort -n | uniq -c | sort -rn | head<\/p>\n
\negrep -w ‘warning|error|critical’ \/var\/log\/messages<\/p>\n","protected":false},"excerpt":{"rendered":"