10.3.9 isUpperStr (verifies half-width uppercase character of the character string)

Syntax

isUpperStr  character-string

Description

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

This command outputs 1 in the following cases:

• All characters are half-width uppercase characters

This command outputs 0.

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

isUpperStr ABC            # "1" is output.
isUpperStr abc            # "0" is output.
isUpperStr AbC            # "0" is output.

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