Problem
You want to check a variable for a given pattern.
Solution
This is my personal favorite way to check for values in vars. See examples.
Example
[[ $(echo $var | grep -ic "pattern") -eq 0 ]] &
You could also go for "-eq 1" – does contain:
[[ $(echo $var | grep -ic "pattern") -eq 1 ]] &
Or "-ne 0" for same, etc.
[[ $(echo $var | grep -ic "pattern") -ne 0 ]] &
Plus you could use || for "or" either in place of "&&" or after this block – same as if .. then "positive" else "negative" fi.
[[ $(echo $var | grep -ic "pattern") -eq 0 ]] || { echo "var does contain pattern" }
Reference
[tags], Unix Coding School[/tags]
