The source file(s) are copied to the
target file or directory. If the
target file already exists, it is either renamed to
file.old if the
owner] source ... target
-b option is
given or overwritten if permissions allow. An alternate backup suffix may be
specified via the
-B option's argument. If the
-d option is given, target
directories are created, and no files are copied.
The options are as follows:
- Use suffix as the backup suffix if
-b is given.
- Backup any existing files before overwriting them by renaming them to
specifying a different backup suffix.
- Copy the file. If the target file already exists and the files are the
same, then don't change the modification time of the target.
- Copy the file. This is actually the default. The
-c option is only included for backwards
- Create all leading components of the target before installing into
- Create directories. Missing parent directories are created as required.
This option cannot be used with the
- Flush the file's contents to disk. When copying a file, use the
fsync(2) function to synchronize the
installed file's contents with the on-disk version.
- Specify the target's file flags. (See
chflags(1) for a list of possible
flags and their meanings.)
- Specify a group. A numeric GID is allowed.
- Specify an alternate mode. The default mode is set
to rwxr-xr-x (0755). The specified mode may be either an octal or symbolic
value; see chmod(1) for a description of
possible mode values.
- Specify an owner. A numeric UID is allowed.
- Preserve the modification time. Copy the file, as if the
-C (compare and copy) option is specified, except
if the target file doesn't already exist or is different, then preserve
the modification time of the file.
- Safe copy. This option has no effect and is supported only for
compatibility. When installing a file, a temporary file is created and
written first in the destination directory, then atomically renamed. This
avoids both race conditions and the destruction of existing files in case
of write failures.
install exec's the command
/usr/bin/strip to strip binaries so that install
can be portable over a large number of systems and binary types. If the
STRIP is set, it is used
install preserves all file
flags, with the exception of the “nodump” flag.
install utility attempts to prevent
moving a file onto itself.
Installing /dev/null creates an empty
- For an alternate strip(1) program to
run. Default is /usr/bin/strip.
- Temporary files created in the target directory by
install utility exits 0 on success,
and >0 if an error occurs.
install utility appeared in
-S flags are non-standard and should not be relied
upon for portability.
Temporary files may be left in the target directory if
install exits abnormally.