Commands by cursivebrain (0)

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Get IP address from domain

A fun thing to do with ram is actually open it up and take a peek. This command will show you all the string (plain text) values in ram
cat? dd? RTFM

Generate Random Text based on Length
Random text of length "$1" without the useless cat command.

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" }

fuman, an alternative to the 'man' command that shows commandlinefu.com examples
Example: fuman sed

Show the command line for a PID with ps
Show the command line for a PID with ps

Recursive replace of directory and file names in the current directory.
no grep, no perl, no pipe. even better in zsh/bash4: $ for i in **/*oldname*; do "mv $i ${i/oldname/newname/}"; done No find, no grep, no perl, no pipe

Find usb device in realtime
Using this command you can track a moment when usb device was attached.

ssh batch jobs: query hundreds of hosts with an ssh command
Need to query hundreds of hosts with an ssh command ? Of course you'll have setup keys on all your remote HOSTs. But in the case a key is not present this command will skip that node, proceeding on to the next. -t: Force pseudo-tty allocation. This can be used to execute arbitrary screen-based programs on a remote machine. Also prevents unwanted stty messages being sent to console -q: Quiet mode. -o "BatchMode yes" If set to yes, passphrase/password querying will be disabled. This option is useful in scripts and other batch jobs where no user is present

create thumbnail of pdf


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