10.3.8 isLowerStr (evaluates half-width lowercase character of the character string)

Syntax

isLowerStr  character-string

Description

This command evaluates whether all character string specified for argument consists of half-width lowercase characters.

This command outputs 1 in the following cases:

• All characters are half-width lowercase characters

This command outputs 0.

• Character string contains a letter that is not a half-width lowercase character

Arguments

character-string

This command specifies the character string to be evaluated.

Output to the standard output

1 or 0.

Return codes

Return code	Meaning
0	Normal termination
Not less than 1	Termination with an error

Examples

isLowerStr abc            # "1" is output.
isLowerStr ABC            # "0" is output.
isLowerStr aBc            # "0" is output.

# Character string contains a letter that is not a half-width lowercase character, return 1.
result=$(isLowerStr "$var1")
if [[ $result -eq 0 ]]; then
  return 1
fi