Loop Through Each Character in a String - Birnam Designs Wiki

Loop Through Each Character in a String

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To look through each character in a string in bash:

david@BIRNAM:~$ MyString=abcde
david@BIRNAM:~$ i=0
david@BIRNAM:~$ while (( i++ < ${#MyString} )); do char=$(expr substr "$MyString" $i 1); echo "<$char>"; done;
<a>
<b>
<c>
<d>
<e>
david@BIRNAM:~$

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Category: Linux Tips