BASH for loop works nicely under UNIX / Linux / Windows and OS X while working on set of files. However, if you try to process a for loop on file name with spaces in them you are going to have some problem. for loop uses $IFS variable to determine what the field separators are. By default $IFS is set to the space character. There are multiple solutions to this problem.
fold is really nifty command line utility to make a text file word wrap. This is useful for large number of text files processing. There is no need to write a perl / python code or use a word processor.
I’ve directory called /home/vivek/scripts/daily with over 25 perl / shell / python scripts for managing daily tasks. One day for some weird reason my crond died and I did not noticed the incident for 2 days. Now crond is started and I’d like to run all those scripts. Here is a quick for loop running [...]
Hardware and software failures are part of life. And that is why you need to have a backup plan. I have already written about backing up files and MySQL databases. There is no need to backup all installed binaries and software programs. The following tip will not just save your time, but both Debian and RHEL based distro can be updated instantly.
Installing software from a source code is common practice in UNIX and Linux world. Some time this is preferred method because it gives all power and flexibility you need to optimize your software such as MySQL, PHP, and Apache etc. However, uninstalling files installed from a source code tar ball is a big headache. Two [...]