ftpusers - Linux
Overview
ftpusers is a versatile utility designed to manage and inspect FTP (File Transfer Protocol) user listings. It provides a comprehensive set of options to filter, search, and perform various operations on FTP user records.
Syntax
ftpusers [-hV] [-a | -A] [-e] [-f pattern] [-g group] [-l] [-s state] [-u user]
Options/Flags
- -h, –help: Displays help information.
- -V, –version: Displays version information.
- -a, –all: Fetches all user listings, including those not accessible to the current user.
- -A, –available: Lists only users not already authenticated.
- -e, –email: Displays email addresses for users.
- -f, –filter pattern: Filters user listings by matching against a given pattern.
- -g, –group group: Filters user listings by group membership.
- -l, –long: Displays detailed information for each user, including user ID, group ID, home directory, and shell.
- -s, –state state: Filters user listings by FTP connection status (e.g., connected, idle, anonymous).
- -u, –user user: Filters user listings by username.
Examples
Display a list of all FTP users:
ftpusers
Filter users by username:
ftpusers -u username
Search for users with a particular email address:
ftpusers -e -f "*@example.com"
List only connected users:
ftpusers -s connected
Extract group names for each user:
ftpusers -g | cut -d':' -f 2
Common Issues
- Permission denied: Ensure you have sufficient permissions to access FTP user listings. Consider using the
-aflag.
Integration
Combine with grep to filter results:
ftpusers -A | grep "anonymous"
Use with awk to extract specific fields:
ftpusers -l | awk '{print $1, " (" $3 ")"}'
Related Commands
ftpdftpnetstat