function::user_short_warn - Linux
Overview
The user_short_warn
function in Linux is used to send a warning message to the given user(s). It is intended primarily for use in automated system administration tasks.
Syntax
user_short_warn [-w|--warning <warning message>] [-u|--users <user or group>] [-a|--all] [-f|--from <from address>] [-d|--date <date>] [-h|--help]
Options/Flags
-w,–warning
Specifies the warning message to be sent.
-u,–users
Specifies the user or group to receive the warning message. Can be specified multiple times.
-a,–all
Sends the warning message to all users.
-f,–from
Specifies the sender address.
-d,–date
Specifies the date of the warning message.
-h,–help
Displays the help message and exits.
Examples
To send a warning message to the user "bob":
user_short_warn -w "system maintenance scheduled for tomorrow" -u bob
To send a warning message to all users:
user_short_warn -w "important system update required" -a
Common Issues
If the specified user does not exist, the command will fail.
Integration
The user_short_warn
function can be integrated with other Linux commands and tools to automate system administration tasks. For example, it can be used to send warning messages to users before scheduled system maintenance or updates.
Related Commands
mailx
: Sends email messages.wall
: Sends a message to all logged-in users.