====== Bash Shell ======

===== Xorg =====

Multiple Xorg servers can be started from a virtual terminal console. 

<code bash>startx </path/to/displaymanager> -- <display> <virtual-terminal></code>

Start a Xorg server running fluxbox on display1 vt7.

<code bash>startx /usr/bin/fluxbox -- :1 vt7</code>

Start a Xorg server running emacs on display2 vt8.

<code bash>startx /usr/bin/emacs -- :2 vt8</code>

===== chroot =====

The **chroot** command changes the root directory. This can be useful when repairing a system in an unbootable state.

A luks encrypted volume must be decrypted before it can be mounted. The **cryptsetup** command can be used to decrypt an luks encrypted volume.

<code bash>cryptsetup open --type luks /dev/<volume> cryptvg</code>

Next the decrpyted volume will be mounted along with the /proc, /sys, and /dev directories.

<code bash>mount /dev/cryptvg /mnt; cd /mnt; mount -t proc /proc proc; mount --rbind /sys sys; mount --rbind /dev dev</code>

With the volume and directories mounted chroot into the new root directory.

<code bash>chroot --userspace=<username> /mnt /bin/bash</code>