I need to know if is possible to use grep to check content of a local variable, for eg. i use read index and i want to check if the index i read is in correct form, how do i do that i tried with grep...
Hello im new here and i shot stright with question.
Mainly i wanna ask , how do i search with regexp in one spot and show the whole thing, what im trying to ask is , for eg. i do ls -l, and i see...