Guide to Unix/Commands/Self Information

General: Introduction | Explanations | Why Unix-like
Platforms: Linux | BSD
Quick Reference: Commands | Environment Variables | Files | License

Commands: Getting Help | File System Utilities | Finding Files | Devices | File Viewing | File Editing | Text Processing | File Compression | File Analysing | Multiuser Commands | Self Information | System Information | Process Management | Kernel Commands | Miscellaneous | SW Development |

whoami

whoami tells you your current username.

Examples:

$ whoami
abicool

Links:

whoami, freebsd.org
20.3 whoami in GNU Coreutils manual, gnu.org

groups

groups states the groups the current user is a member of

Examples:

$ groups
wheel slocate www

Links:

groups, freebsd.org
20.4 groups in GNU Coreutils manual, gnu.org

id

id gives you the same information as the whoami and groups commands, but also includes the user id (uid) and group id (gid) integers associated with the login.

Examples:

$ id
uid=3426(alice) gid=10(wheel)
groups=10(wheel),21(slocate),401(www)

Links:

id, opengroup.org
20.1 id in GNU Coreutils manual, gnu.org

tty

tty tells you the terminal device that is assigned to your interactive login. The tty represents your console device, network connection ("ssh", ...), or terminal emulator process ("xterm", "konsole", ...).

Examples:

$ tty
/dev/pts/14

Links:

tty, opengroup.org
tty man page, man.cat-v.org
19.4 tty in GNU Coreutils manual, gnu.org