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Base: Add more manpages for command-line utilities

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Maciej Zygmanowski 2021-05-31 17:16:21 +02:00 committed by Gunnar Beutner
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commit 57340dda36
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## Name
dmesg - display the kernel log
## Synopsis
```**sh
# dmesg
```
## Description
`dmesg` displays the kernel log (as seen on serial debug output). Only messages printed by kernel processes are displayed.
## Examples
```sh
$ dmesg
```

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## Name
hostname - print or set hostname
## Synopsis
```**sh
$ hostname [hostname]
```
## Description
`hostname` prints current host name. If the `hostname` argument is give and the user is a superuser, the utility sets the current host name to its value. The maximum hostname length is 64 characters. The hostname is not persisted after reboot.
## Examples
```sh
# Print current hostname
$ hostname
courage
# Set the new hostname
# hostname foo
# Print new hostname
# hostname
foo
```

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## Name
umount - unmount file system
## Synopsis
```**sh
$ umount <mountpoint>
```
## Arguments
* `mountpoint`: File system path to unmount
## Description
`umount` run as root unmounts a file system mounted at specified `mountpoint`.
## Examples
```sh
# umount /
```
## See also
* [`mount`(8)](../man8/mount.md)