Commands using read (340)

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check open ports without netstat or lsof

Finding the number of cpu's

Open (in vim) all modified files in a git repository
The option --porcelain makes the output of git easier to parse. This one-liner may not work if there is a space in the modified file name.

Unlock your KDE4 session remotely (for boxes locked by KDE lock utility)
Do the unlock KDE screen saver locked session with lightdm display manager used in Kubuntu 12.10 +

Prepend a text to a file.
Syntax: $ prepend content to add [filename] Uses ed, so no temp files created.

File rotation without rename command
Rotates log files with "gz"-extension in a directory for 7 days and enumerates the number in file name. i.e.: logfile.1.gz > logfile.2.gz I needed this line due to the limitations on AIX Unix systems which do not ship with the rename command.

Set laptop display brightness
Run as root. Path may vary depending on laptop model and video card (this was tested on an Acer laptop with ATI HD3200 video). $ cat /proc/acpi/video/VGA/LCD/brightness to discover the possible values for your display.

Block the 6700 worst spamhosts
The above url contains over 6700 of the common ad websites. The command just pastes these into your /etc/hosts.

CLFUContest : Check which process consume more than 10% of the cpu (configurable)

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" }


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