script – IT

Tricks in command line

Serve current directory tree at http://$HOSTNAME:8000/ $ python -m SimpleHTTPServer Currently mounted filesystems in nice layout $ mount | column -t Get your external IP address / host / user agent / port from http://ifconfig.me/ $ curl ifconfig.meor$ curl ifconfig.me/ip$ curl ifconfig.me/host$ curl ifconfig.me/ua$ curl ifconfig.me/port Execute a command at one, given time $ echo… Read More »

Delete range of lines above pattern

Displaying lines (eg: 2 lines) above pattern is easy with grep -B2 option. The ‘-v’ option removes only the matched lines but it not working with -B2 option. Option “-B” print outs lines, not select them. From manual of grep: sed can suppress more lines, but only after the pattern: So we have print out… Read More »