Linux Commands Examples

A great documentation place for Linux commands


change file security context


[OPTION]... [-u USER] [-r ROLE] [-l RANGE] [-t TYPE] FILE...
[OPTION]... --reference=RFILE FILE...

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chcon -R --type=httpd_sys_content_t /var/aegir
chcon -R --type=ssh_home_t /var/aegir/.ssh
chcon -R --type=httpd_config_t /var/aegir/config
chcon -R --type=httpd_config_t /var/aegir/config
chcon -R --type=ssh_home_t /var/aegir/.ssh/authorized_keys
cp /root/aws.php /tmp/
chmod 777 /var/cache/lighttpd/compress/
chcon -h system_u:object_r:httpd_sys_content_t /var/www
chcon -h system_u:object_r:httpd_sys_content_t /var/www
chcon -R -h root:object_r:httpd_sys_content_t /var/www/*
chcon -R -t httpd_sys_content_rw_t /var/www/labs/tiles


Change the security context of each FILE to CONTEXT. With --reference, change the security context of each FILE to that of RFILE.

affect the referent of each symbolic link (this is the default), rather than the symbolic link itself

-h, --no-dereference

affect symbolic links instead of any referenced file

-u, --user=USER

set user USER in the target security context

-r, --role=ROLE

set role ROLE in the target security context

-t, --type=TYPE

set type TYPE in the target security context

-l, --range=RANGE

set range RANGE in the target security context


use RFILE’s security context rather than specifying a CONTEXT value

-R, --recursive

operate on files and directories recursively

-v, --verbose

output a diagnostic for every file processed

The following options modify how a hierarchy is traversed when the -R option is also specified. If more than one is specified, only the final one takes effect.


if a command line argument is a symbolic link to a directory, traverse it


traverse every symbolic link to a directory encountered


do not traverse any symbolic links (default)


display this help and exit


output version information and exit


Copyright © 2012 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <>.
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.

reporting bugs

Report chcon bugs to bug-coreutils[:at:]gnu[:dot:]org
GNU coreutils home page: <>
General help using GNU software: <>
Report chcon translation bugs to <>

see also

The full documentation for chcon is maintained as a Texinfo manual. If the info and chcon programs are properly installed at your site, the command

info coreutils 'chcon invocation'

should give you access to the complete manual.


Written by Russell Coker and Jim Meyering.

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