reboot or fastboot Command
Purpose
Restarts the system.
Syntax
{ reboot | fastboot } [ -l ] [ -n ] [ -q ] [ -t mmddHHMM [ yy ] ]
Description
The reboot command can be used to perform a reboot operation if no other users are logged into the system. The lsattr command and enter lsattr -D -l sys0. The default value is true. To reset the autorestart attribute value to false, use the /var/adm/wtmp, the login accounting file. These actions are inhibited if the -l, -n, or -q flags are present.
The fastboot command restarts the system by calling the reboot command. The fsck command runs during system startup to check file systems. This command provides BSD compatibility.
Flags
| Item | Description |
|---|---|
| -l | Does not log the reboot or place a shutdown record in the accounting file. The -l flag does not suppress accounting file update. The -n and -q flags imply -l. |
| -n | Does not perform the sync command. Use of this flag can cause file system damage. |
| -q | Restarts without first shutting down running processes. Note: A
file system synchronization will not occur if the -q flag is
used. If you want the file system to be synchronized, manually run
the sync command or use the shutdown -r command.
|
| -t | Shuts down the system immediately and then restarts the system
on the specified date. A valid date has the following format: mmddHHMM [ yy ] where:
|
Security
Attention RBAC users and Trusted AIX® users: This command can perform privileged operations. Only privileged users can run privileged operations. For more information about authorizations and privileges, see Privileged Command Database in Security. For a list of privileges and the authorizations associated with this command, see the lssecattr command or the getcmdattr subcommand.
Examples
To shut down the system without logging the reboot, enter:
Files
| Item | Description |
|---|---|
| /etc/rc | Specifies the system startup script. |
| /var/adm/wtmp | Specifies login accounting file. |