---
name: "fid"
section: "1"
platform: "linux"
package: "id-utils"
version: "4.6.28-20200521ss15dab+b1"
release: "Debian 12 (Bookworm)"
platforms: ["linux"]
url: "https://new.carta.tech/fid"
---

# fid(1)

List identifiers that occur in FILENAME

## NAME

fid - List identifiers that occur in FILENAME

## SYNOPSIS

**fid** \[*OPTION*\] *FILENAME* \[*FILENAME2*\]

## DESCRIPTION

List identifiers that occur in FILENAME, or if FILENAME2 is also given list the identifiers that occur in both files.

- **-f**, **--file**=*FILE*

  file name of ID database

- **--help**

  display this help and exit

- **--version**

  output version information and exit

## REPORTING BUGS

Report bugs to bug-idutils@gnu.org

## SEE ALSO

The full documentation for the **id-utils** package is maintained as a Texinfo manual.  If the **info** and **id-utils** packages are properly installed, the command

-

  **info 'ID database'**

should give you access to the complete manual.