Commands by click424 (0)

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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" }

Fast command-line directory browsing
After typing cd directory [enter] ls [enter] so many times, I figured I'd try to make it into a function. I was surprised how smoothly I was able to integrate it into my work on the command line. Just use cdls as you would cd. It will automatically list the directory contents after you cd into the directory. To make the command always available, add it to your .bashrc file. Not quite monumental, but still pretty convenient.

MySQL dump restore with progress bar and ETA
Display a progress bar while restoring a MySQL dump.

count and number lines of output, useful for counting number of matches
Write each FILE to standard output, with line numbers added. With no FILE, or when FILE is -, read standard input.

log rm commands
Sometimes, it is annoying to find your files or directories missing. If you want to log all the rm commands you can put this in /etc/profile.

List all NPM global packages installed

Find all SUID binaries

View dmesg output in human readable format

Check if you partition are aligned
To get most of you HDD/SSD driver you need to make sure you partition are aligned, if not the speed penalty can be up to 50% slower! this simple one liner will check to see if each partition start sector is divided by 512 you need to change sda with your driver if you find the one of your partitions is not aligned use gparted to move the start sector of the partition to be divided of 512

Update twitter with Perl
Requires Net::Twitter. Just replace the double quoted strings with the appropriate info.


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