Strings command substitute

File management in Linux CLi

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Whitespace for alignment

Whitespace in simply means the spaces, tabs, and newlines you use when writing commands or scripts even though it looks…

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bash in-built eval command

Normally, when you tell `bash` something, it reads your instruction one time and does exactly what it understands from…

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Whitespaces difference in between sed and awk output.

The difference between sed and awk in terms of whitespaces during output sed just remove the declared characters and…

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Color your terminal

Run following commands in Linux terminal to make your black & white screen colourful. To keep script at your machine…

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crontab

The crontab, a very useful and most important tool to use it for repetitive jobs. It has most customizable schedule…

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Pluggable Authentication Modules (PAM)

PAM is a system for authenticating users in Linux and other Unix-like operating systems. PAM allows for the flexible…

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Bash scripting - while conditional loop

while conditional loop - A loop; repeatedly executes a block of code as long as a condition is true, in other words it…

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Script to rename predictable network devices into classic network devices

In a curiosity to make a script to have classic network interface name created this script rpni.sh this script is not…

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Generate random number to a specific length

There are many ways to generate random number in command line, for now I have found this Where head will read starting…

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