.Dd October 28, 2015
.Dt XBPS-UUNSHARE 1
.Sh NAME
.Nm xbps-uunshare
.Nd XBPS utility to chroot and bind mount with Linux user namespaces
.Sh SYNOPSIS
.Nm xbps-uunshare
.Op OPTIONS
.Ar CHROOTDIR
.Ar COMMAND
.Op ARGS
.Sh DESCRIPTION
The
.Nm
utility allows users to chroot and bind mount required pseudo-filesystems
(/dev, /proc and /sys) in the target
.Ar CHROOTDIR
to execute
.Ar COMMAND .
.Pp
The
.Nm
utility uses by default Linux namespaces to isolate IPC, PIDs and mounts to
the calling process. Thanks to
.Xr user_namespaces 7
the user does not need any privilege to create an isolated lightweight container.
.Sh OPTIONS
.Bl -tag -width -x
.It Fl b Ar src:dest
Bind mounts
.Ar src
into
.Ar CHROOTDIR/dest .
This option may be specified multiple times.
Please note that both
.Ar src
and
.Ar dest
must be absolute paths and must exist.
.El
.Sh NOTES
The
.Nm
utility uses Linux specific features (namespaces) and it's not meant to be portable to
other Operating Systems. The following kernel options must be enabled:
.Pp
.Bl -tag -width CONFIG_NAMESPACES -compact -offset indent
.It Sy CONFIG_NAMESPACES
.It Sy CONFIG_IPC_NS
.It Sy CONFIG_USER_NS
.It Sy CONFIG_UTS_NS
.El
.Sh SEE ALSO
.Xr xbps-checkvers 1 ,
.Xr xbps-create 1 ,
.Xr xbps-dgraph 1 ,
.Xr xbps-fbulk 1 ,
.Xr xbps-install 1 ,
.Xr xbps-pkgdb 1 ,
.Xr xbps-query 1 ,
.Xr xbps-reconfigure 1 ,
.Xr xbps-rindex 1 ,
.Xr xbps-uchroot 1 ,
.Xr xbps.d 5
.Sh AUTHORS
.An Juan Romero Pardines <xtraeme@gmail.com>
.Sh BUGS
Probably, but I try to make this not happen. Use it under your own
responsibility and enjoy your life.
.Pp
Report bugs at https://github.com/voidlinux/xbps/issues