How to restrict direct root user password login on Linux ?
In this post, we will see how to restrict direct root login via password, and only allow login via keys. To achieve this, we need to change below setting in...
Tag: only
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How to make variables as read only in bash shell linux ?
Variables in Linux can be made read only using the keyword “readonly”. For example, if we want a variable to contain a value say 10 and must not be changed...
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How to unset variables in linux bash shell (normal and read only variables) ?
We all know that a variable is defined by simply assigning a value to it. However bash shell also provides a feature to unset it, in order to free it...