> For the complete documentation index, see [llms.txt](https://linux-tutorial-cli.gitbook.io/linux-cli-tutorial/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://linux-tutorial-cli.gitbook.io/linux-cli-tutorial/txt-files/pathchk.md).

# pathchk

## pathchk

The `pathchk` command is a Linux command that is used to check the validity of pathnames. A pathname is a string that specifies the location of a file or directory on a filesystem.

The syntax for the `pathchk` command is:

```
pathchk [options] [pathname]
```

The options are:

* `-p` or `--portability`: Checks the pathname for portability.
* `-s` or `--strict`: Checks the pathname for strict compliance with the POSIX standard.
* `-v` or `--verbose`: Prints verbose output.

If no options are specified, the `pathchk` command will check the pathname for portability.

For example, to check the validity of the pathname `/home/bard/file.txt`, you would use the following command:

```
pathchk /home/bard/file.txt
```

This would check the pathname `/home/bard/file.txt` for portability. If the pathname is valid, the `pathchk` command will return a zero exit status. If the pathname is invalid, the `pathchk` command will return a non-zero exit status and print an error message.

The `pathchk` command is a useful tool for checking the validity of pathnames. It can be used to ensure that pathnames are valid before using them in scripts or applications.

Here are some of the benefits of using the `pathchk` command:

* It can help to prevent errors caused by invalid pathnames.
* It can help to improve the portability of scripts and applications.
* It can help to identify and fix problems with filesystems.

If you are using pathnames in scripts or applications, you should make sure to use the `pathchk` command to check their validity. It is a valuable tool for preventing errors and improving the portability of your code.

## help

```
Usage: pathchk [OPTION]... NAME...
Diagnose invalid or unportable file names.

  -p                  check for most POSIX systems
  -P                  check for empty names and leading "-"
      --portability   check for all POSIX systems (equivalent to -p -P)
      --help     display this help and exit
      --version  output version information and exit

```