Shell scripting

Cheat sheet act as a reference tool which provides cut and paste kind of commands to complete a specific task. I often recommend following set of best cheat sheets to students and IT professionals. It include Linux / UNIX command and shell scripting.

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Shell scripting is fun. It is useful to create nice (perhaps ugly) things (read as solutions) in shell scripting. Now Windows got Powershell. But how does PowerShell measure up to traditional shells like Bash?

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You can use find command or recursdir command to recurse through local or remote directories to command/find files or create tar files. recursdir command pass a C script to recursively perform operations on files. recursdir is an excellent tool for automatic stuff. It provides C style programming functions and statements such as: strncmp() exec() system() […]

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rsyn is the best tool for mirroring servers and data. However, there is also mirrordir tool. As name suggest it can mirror directories and do lots of other things. It offers lots of options for die hard shell scripting fans. It can copy, mirror directory trees via a minimal set of changes, locally or over […]

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Raju asks:

How can I Debug a shell scripts?

This is most common question asked by new admins or UNIX user.

Shell scripting debugging can be boring job (read as not easy). There are various ways to debug a shell script.

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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.

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