Commands by alanluiz2020 (0)

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sort list of email addresses by domain.tld
email random list can be created here: https://www.randomlists.com/email-addresses

Lists the size of certain file in every 10 seconds
watch is a command especially designed for doing this job

Add existing user to a group

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" }

do 'foo' until it exits successfully, pausing in between crashes
restart a buggy script when it dies. works great for "git svn fetch", which leaks memory like a sieve and eventually dies...making you restart it.

tar exclude files or directories
If you want to exclude only one file or directory you should use as --exclude=file_or_directory

Convert a string to "Title Case"
Converts the first letter of each word to upper case

DVD ripping with ffmpeg
Alternative, imho better, using the concat protocol

Get top N files in X directory
You can simply run "largest", and list the top 10 files/directories in ./, or you can pass two parameters, the first being the directory, the 2nd being the limit of files to display. Best off putting this in your bashrc or bash_profile file

show the real times iso of epochs for a given column
When you have one of those (log)files that only has epoch for time (since no one will ever look at them as a date) this is a way to get the human readable date/time and do further inspection. Mostly perl-fu :-/

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