Check if an input is numeric or char | Bash Script

Check if an input is numeric or char

October 23, 2013bashalphanumeric, char, numeric, scriptadmin

With this script you can check if an argument to a script is numeric, char or alphanumeric.

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01 [[ -z "$1" ]] && echo "I cant work without an input" && exit 1
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05 INPUT="$@"
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09 [[ "$INPUT" == ?(+|-)+([0-9]) ]] && echo "$INPUT is numeric" && exit 0
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01	[[ -z "$1" ]] && echo "I cant work without an input" && exit 1
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05	INPUT="$@"
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09	[[ "$INPUT" == ?(+\|-)+([0-9]) ]] && echo "$INPUT is numeric" && exit 0
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