I want to identify last character of string, I am accessing the last character using:
echo "${VAR: -1}"
If it's a character, I want to add a .(dot) before the character and do nothing if it's a number.
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1 Answer
expr match ${VAR: -1} '.*[0-9]' >/dev/null || VAR="${VAR:0:`expr ${#VAR} - 1`}.${VAR: -1}"
explanation:
expr match ${VAR: -1} '.*[0-9]' >/dev/null
The first expression returns 1 if last character is a number
VAR="${VAR:0:`expr ${#VAR} - 1`}.${VAR: -1}"
If the expression returns 1 then the rest of the line assigns var to all chars in var up to but not including the last char, appends a "." character, and appends the last character.
