Posts tagged command

Using the getent command

The command getent is not known to many users but it is very useful when you need to get information about users, groups, or other entities. The command can be used to get information about users, groups, or other entities for example without having to know where the information is stored.

The syntax of the getent command is simple to use as it takes the name of the data source and possibly the name of the entry to retrieve.

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Massive file update with sed

Recently I generated kickstart files for a virtual environment where people could experiment and virtual machines could be rebuilt quickly. Sadly enough a typo slipped into the generated files that would make the anaconda installer stops. Every kickstart file could be corrected by the hand of course, but one sed command could also correct the typo in all files in one go.

The Unix toolkit is full of handy tools and options like this and it pays to get to know your environment. Especially when it is your work environment and you’re familiar with the Unix philosophy.

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