shell script to verify brackets

Hi ,

I am trying to write a shell script to verify if brackets are used correctly in a file . If there is some other format it should show invalid.

Below are the correct formats :


Incorrect formats may have format :

Please advise .
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if grep -qv "^\[[a-z].*[0-9]\]$" /path/to/your/file
      echo "File contains invalid characters"

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That is good, but it doesn't confirm if there are double brackets at the end.

Simplify it like this maybe:

if egrep '(\[\[|\]\])' /path/to/file
         echo "Invalid characters exist"

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sunilsagarAuthor Commented:
Thanks for quick Savone, it works !
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Shell Scripting

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