Tcl/Tk in a Nutshell

Name

id

id options

Provides various functions related to getting, setting, and converting user, group, and process identifiers. Some functions can be performed only by the superuser. Under Windows only the host and process options are implemented.

id user [name]

Without a name option, return the current username. With an option, sets the real and effective user to name.

id userid [uid]

Without a uid option, return the current numeric user ID. With an option, set the real and effective user to uid.

id convert userid uid

Return the username corresponding to numeric user ID uid.

id convert user name

Return the numeric user ID corresponding to user name.

id group [name]

Without a name option, return the current group ID name. With an option, set the real and effective group ID to name.

id groupid [gid]

Without a gid option, return the current numeric group ID. With an option, set the real and effective group ID to gid.

id groups

Return a list of group names for the current process.

id groupids

Return a list of numeric group IDs for the current process.

id convert groupid gid

Return the group name corresponding to numeric group ID gid.

id convert group name

Return the numeric group ID corresponding to group name.

id effective user

Return the effective username.

id effective userid

Return the effective user ID number.

id effective group

Return the effective group name.

id effective groupid

Return the effective group ID number.

id host

Return the hostname of the system on which the program is running.

id process

Return ...