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Tag: system administration

Hashing Algorithms and Checksums in Linux

Posted on February, 2021February, 2022 by Rimsha Ashraf

Say you want to send an important file, how do you ensure that the receiver will get the exact file without any changes ?

Well, the most common approach is use hashing, which translates the file information into fixed sized … Read more

Tagged ethical hacking, linux, system administration

Regular Expressions using Sed and Grep

Posted on February, 2021February, 2021 by Abdou Rockikz

A regular expression is a sequence of characters defining a search pattern. It is one of the most powerful tools when it comes to mass text data filtering and modification.

Regular expressions often scares the newcomers but even with a … Read more

Tagged linux, system administration

How to List Users in Linux

Posted on January, 2021January, 2021 by Abdou Rockikz

Because of its multi-user features, Linux stands as the most liked operating system among people especially for those who love to run commands. Like its other exceptional characteristics, configuration and managing of users and groups is also a significant part … Read more

Tagged linux, system administration

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