Commands by niall (2)

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Get rid from a blank display without reboot
Killall5 will kill your session and redirect to login screen. -Very useful when suffering display problems. -Can use F1-F6 -Need to login in the particular console if not already

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Watch several log files of different machines in a single multitail window on your own machine
this way you have the multitail with all its options running on your own machine with the tails of the two remote machines inside :)

Remove the first character of each line in a file

wget with resume
I couldn't find this on the site and it's a useful switch. Great for large files.

Adding Prefix to File name
Good old bracket expansion :-) For large numbers of files, "rename" will spare you the for-loop, or the find/exec...

Delete all but the latest 5 files
yes 6 (tail from 6th line)

Random Futurama quote
Random Futurama quote from http://cubemonkey.net/quotes/. Change the quote= to change the quote source.

convert plain .avi movies to .mpeg
works "out of the box" on ubuntu 8.10

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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