INSTALL(1) General Commands Manual INSTALL(1)
install - install files
install [ -cs ] [ -g group ] [ -m mode ] [ -o owner ] file1 file2
install [ -cs ] [ -g group ] [ -m mode ] [ -o owner ] file ... direc-
install -d [ -g group ] [ -m mode ] [ -o owner ] directory
This command is available with the Install software installation
option. Refer to for information on how to install optional software.
Install is used within makefiles to copy new versions of files into a
destination directory and to create the destination directory itself.
The first two forms are similar to the cp(1) command with the addition
that executable files can be stripped during the copy and the owner,
group, and mode of the installed file(s) can be given.
The third form can be used to create a destination directory with the
required owner, group and permissions.
Note: install uses no special privileges to copy files from one place
to another. The implications of this are:
o You must have permission to read the files to be installed.
o You must have permission to copy into the destination file or
o You must have permission to change the modes on the final
copy of the file if you want to use the -m option to change
o You must be superuser if you want to specify the ownership of
the installed file with -o. If you are not the super-user,
or if -o is not in effect, the installed file will be owned
by you, regardless of who owns the original.
-g group Set the group ownership of the installed file or direc-
tory. (staff by default)
-m mode Set the mode for the installed file or directory. (0755
-o owner If run as root, set the ownership of the installed file
to the user-ID of owner.
-c Copy files. In fact install always copies files, but
the -c option is retained for backwards compatibility
with old shell scripts that might otherwise break.
-s Strip executable files after they are copied.
-d Create a directory. Missing parent directories are cre-
ated as required as in mkdir -p. If the directory
already exists, the owner, group and mode will be set to
the values given on the command line.
chgrp(1), chmod(1V), cp(1), mkdir(1), strip(1), chown(8)
7 September 1988 INSTALL(1)