10.3.28 isFileOrDir (evaluates existence of File Directory)

Syntax

isFileOrDir  path-name

Description

This command evaluates whether the file or directory specified for argument exists.

This command outputs 1 in the following cases:

• File or directory exists.

This command outputs 0.

• Neither file nor directory exists.

Arguments

path-name

This command specifies the path name of the file or directory 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

If the file log.txt exists and the file tmp.txt does not exist:
isFileOrDir log.txt      # "1" is output.
isFileOrDir tmp.txt      # "0" is output.

If the directory test exists and directory prog does not exist:
isFileOrDir test          # "1" is output.
isFileOrDir prog          # "0" is output.

# If file/directory entry1 does not exist, return 1.
result=$(isFileOrDir entry1)
if [[ $result -eq 0 ]]; then
  return 1
fi