Commands by zluyuer (15)

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commandlinefu.com is the place to record those command-line gems that you return to again and again. That way others can gain from your CLI wisdom and you from theirs too. All commands can be commented on, discussed and voted up or down.

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One liner to kill a process when knowing only the port where the process is running

Ping all hosts on 192.168.1.0/24
Pings all the hosts on 192.168.1.0/24 in parallel, so it is very fast. Alive host IP addresses are echoed to stdout as pings are responded to.

Create a script of the last executed command
Sometimes commands are long, but useful, so it's helpful to be able to make them permanent without having to retype them. An alternative could use the history command, and a cut/sed line that works on your platform. $history -1 | cut -c 7- > foo.sh

Convert seconds to [DD:][HH:]MM:SS
Converts any number of seconds into days, hours, minutes and seconds. sec2dhms() { declare -i SS="$1" D=$(( SS / 86400 )) H=$(( SS % 86400 / 3600 )) M=$(( SS % 3600 / 60 )) S=$(( SS % 60 )) [ "$D" -gt 0 ] && echo -n "${D}:" [ "$H" -gt 0 ] && printf "%02g:" "$H" printf "%02g:%02g\n" "$M" "$S" }

backup your history
simple and easy backup your history with timestamp

Get the Last tweet (Better than Twitter feed rrs)
I was using some twitter bots and twitter bloks my IP. Now im using some proxys and i use these command to validate the tweet was published.

List every docker's name, IP and port mapping

Quickest way to sort/display # of occurences

Matrix Style
Same as above but slooooow it down

remove files and directories with acces time older than a given date
touch a dummy file with the specified date, then use find with -anewer .


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