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File: coreutils.info,  Node: install invocation,  Next: mv invocation,  Prev: dd invocation,  Up: Basic operations

11.3 `install': Copy files and set attributes
=============================================

`install' copies files while setting their file mode bits and, if
possible, their owner and group.  Synopses:

     install [OPTION]... [-T] SOURCE DEST
     install [OPTION]... SOURCE... DIRECTORY
     install [OPTION]... -t DIRECTORY SOURCE...
     install [OPTION]... -d DIRECTORY...

   * If two file names are given, `install' copies the first file to the
     second.

   * If the `--target-directory' (`-t') option is given, or failing
     that if the last file is a directory and the
     `--no-target-directory' (`-T') option is not given, `install'
     copies each SOURCE file to the specified directory, using the
     SOURCEs' names.

   * If the `--directory' (`-d') option is given, `install' creates
     each DIRECTORY and any missing parent directories.  Parent
     directories are created with mode `u=rwx,go=rx' (755), regardless
     of the `-m' option or the current umask.  *Note Directory Setuid
     and Setgid::, for how the set-user-ID and set-group-ID bits of
     parent directories are inherited.

   `install' is similar to `cp', but allows you to control the
attributes of destination files.  It is typically used in Makefiles to
copy programs into their destination directories.  It refuses to copy
files onto themselves.

   `install' never preserves extended attributes (xattr).

   The program accepts the following options.  Also see *note Common
options::.

`-b'
`--backup[=METHOD]'
     *Note Backup options::.  Make a backup of each file that would
     otherwise be overwritten or removed.

`-C'
`--compare'
     Compare each pair of source and destination files, and if the
     destination has identical content and any specified owner, group,
     permissions, and possibly SELinux context, then do not modify the
     destination at all.

`-c'
     Ignored; for compatibility with old Unix versions of `install'.

`-D'
     Create any missing parent directories of DEST, then copy SOURCE to
     DEST.  This option is ignored if a destination directory is
     specified via `--target-directory=DIR'.

`-d'
`--directory'
     Create any missing parent directories, giving them the default
     attributes.  Then create each given directory, setting their owner,
     group and mode as given on the command line or to the defaults.

`-g GROUP'
`--group=GROUP'
     Set the group ownership of installed files or directories to
     GROUP.  The default is the process's current group.  GROUP may be
     either a group name or a numeric group ID.

`-m MODE'
`--mode=MODE'
     Set the file mode bits for the installed file or directory to MODE,
     which can be either an octal number, or a symbolic mode as in
     `chmod', with `a=' (no access allowed to anyone) as the point of
     departure (*note File permissions::).  The default mode is
     `u=rwx,go=rx,a-s'--read, write, and execute for the owner, read
     and execute for group and other, and with set-user-ID and
     set-group-ID disabled.  This default is not quite the same as
     `755', since it disables instead of preserving set-user-ID and
     set-group-ID on directories.  *Note Directory Setuid and Setgid::.

`-o OWNER'
`--owner=OWNER'
     If `install' has appropriate privileges (is run as root), set the
     ownership of installed files or directories to OWNER.  The default
     is `root'.  OWNER may be either a user name or a numeric user ID.

`--preserve-context'
     Preserve the SELinux security context of files and directories.
     Failure to preserve the context in all of the files or directories
     will result in an exit status of 1.  If SELinux is disabled then
     print a warning and ignore the option.

`-p'
`--preserve-timestamps'
     Set the time of last access and the time of last modification of
     each installed file to match those of each corresponding original
     file.  When a file is installed without this option, its last
     access and last modification times are both set to the time of
     installation.  This option is useful if you want to use the last
     modification times of installed files to keep track of when they
     were last built as opposed to when they were last installed.

`-s'
`--strip'
     Strip the symbol tables from installed binary executables.

`--strip-program=PROGRAM'
     Program used to strip binaries.

`-S SUFFIX'
`--suffix=SUFFIX'
     Append SUFFIX to each backup file made with `-b'.  *Note Backup
     options::.

`-t DIRECTORY'
`--target-directory=DIRECTORY'
     Specify the destination DIRECTORY.  *Note Target directory::.

`-T'
`--no-target-directory'
     Do not treat the last operand specially when it is a directory or a
     symbolic link to a directory.  *Note Target directory::.

`-v'
`--verbose'
     Print the name of each file before copying it.

`-Z CONTEXT'
`--context=CONTEXT'
     Set the default SELinux security context to be used for any
     created files and directories.  If SELinux is disabled then print
     a warning and ignore the option.


   An exit status of zero indicates success, and a nonzero value
indicates failure.