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Util-linux is a set of various useful Linux utilities.


USE flags

USE flags for sys-apps/util-linux Various useful Linux utilities

build !!internal use only!! DO NOT SET THIS FLAG YOURSELF!, used for creating build images and the first half of bootstrapping [make stage1] global
caps build setpriv helper (run programs with diff capabilities) local
cramfs build mkfs/fsck helpers for cramfs filesystems local
fdformat build fdformat (floppy disk format) local
kill build the kill program local
pam build runuser helper local
suid install mount/umount as setuid so non-root users may mount/umount devices, and wall/write as setgid so non-root users can notify other users local
tty-helpers install the mesg/wall/write tools for talking to local users local
unicode Add support for Unicode global


Enabling the kill USE flag will typically creates a conflict between the sys-process/procps and sys-apps/util-linux packages. Both packages include the kill command, and both packages are capable of conditionally building the kill utility by setting the kill USE flag (in fact, sys-apps/coreutils also include support for a kill command). Gentoo toolchain developers have decided the sys-process/procps package will be the default provider of the kill utility for the @system set.

For more information see the kill article.


The mesg, wall, and write utilities are installed using the tty-helpers USE flag. This can be viewed by scrolling down in USE flags section above.


root #emerge --ask sys-apps/util-linux


Environment variables

  • VAR1
  • VAR2


  • /etc/global_file_example - Global (system wide) configuration file.
  • ~/.local_file_example - Local (per user) configuration file.


(Provide instructions on starting/stopping and enabling/disabling the software's service. This is only really necessary if it if the software includes a daemon for certain tasks.)


There are many utilities included in with the util-linux package.


(Troubleshoot issues in this section. Separate issues by best describing the error with a new section name. Remove if no issues are known.)

Issue 1



Warning: This package is part of the @system set. Removing it will remove an important suite of packages. Proceed at your own risk!

root #emerge --ask --depclean sys-apps/util-linux

See also

External resources