Loops in bash are something Ive covered before, including parsing a file record by record (HERE), but one of the other uses I have frequently is a never ending script which watches something changing.
Bash shell has some very simple commands that can help you do everyday tasks. One of the main functions I need a script to do is to read each line in a file from beginning to end and do something with each line the script reads.
Anyone who has tried to handle media files of any sort from images to movies, or also flv, mp4, mp3, ts or other types of multimedia content will have heard of the utility called FFMPEG.
Quite simply FFMPEG is the gem that gives you the ability to broadcast/stream, convert, or play that media file.
I needed this command and had to look around to try and find it. There is often a need on Linux to be able to find an empty directory, and maybe to remove it as well. Find empty directories and/or remove Find empty directories in the current directory using find -empty find . -type d… Read More »
Run cron job every 90 mins Running a cron job is normally easy enough when you do not try and get over-complicated. Every hour or minute, or even every Monday is a simple task using the standard columns included in cron. Just to refresh you here are the first columns of a standard crontab for… Read More »
Im a guy who likes SOLUTIONS to issues, not neccesarily wanting or needing to know the reasons why something happens…. so heres another one… Bash – How to echo an exclamation mark So you would think something simple like this : echo “abcde!abcde” BUT echo “abcde!abcde” -bash: !abcde”: event not found Damn… ok the solution… Read More »
Some people say that you never know everything, how very true that is when you are scripting in Bash Shell. A week ago I found out something I needed to do a million times before, but had always re-invented the wheel to do so…. Bash – Parse a file FORWARDS (the easy one) cat <file>… Read More »