Assume that you want to find and replace a specific word in a file can use SED command.

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UUIDs is very helpful to known as identifier for block devices in Linux and its represented by 32 hexadecimal digits probably 128 bit long numbers,

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By default the bc command installed in your system, if you could not found the command we can easily install it.

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Wget utility used for download files from the web, It support protocols like, HTTP, HTTPS, FTP. The wget installed in build Linux / Unix and Mac operating system.

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vnStat is a network traffic monitor for specific interface like eth0, eth1...

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In this post how to replace and remove one or more lines in a file using sed command with example.

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Do you want to insert multiple lines below of a specific line sed command will help us with different cases,

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