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install - install binaries


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install [-bCcMpSsv] [-B suffix] [-f flags] [-g group] [-m mode] [-o owner] file1 file2 install [-bCcMpSsv] [-B suffix] [-f flags] [-g group] [-m mode] [-o owner] file1 ... fileN directory install -d [-v] [-g group] [-m mode] [-o owner] directory ...


The file(s) are copied to the target file or directory. If the destination is a directory, then the file is copied into directory with its original filename. If the target file already exists, it is either renamed to file .old if the -b option is given or overwritten if permissions allow. An alternate backup suffix may be specified via the -B option’s argument.

The options are as follows:

-b Back up any existing files before overwriting them by renaming them to file .old. See -B for specifying a different backup suffix.
-B suffix
Use suffix as the backup suffix if -b is given.
-C Copy the file. If the target file already exists and the files are the same, then do not change the modification time of the target. If the target’s file flags and mode need not to be changed, the target’s inode change time is also unchanged.
-c Copy the file. This is actually the default. The -c option is only included for backwards compatibility.
-d Create directories. Missing parent directories are created as required.
-f Specify the target’s file flags; see chflags(1) for a list of possible flags and their meanings.
-g Specify a group. A numeric GID is allowed.
-M Disable all use of mmap(2).
-m 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.
-o Specify an owner. A numeric UID is allowed.
-p Preserve the access and modification times. Copy the file, as if the -C (compare and copy) option is specified, except if the target file does not already exist or is different, then preserve the access and modification times of the source file.
-S Safe copy. Normally, install unlinks an existing target before installing the new file. With the -S flag a temporary file is used and then renamed to be the target. The reason this is safer is that if the copy or rename fails, the existing target is left untouched.
-s install exec’s the command strip(1) to strip binaries so that install can be portable over a large number of systems and binary types. See below for how install can be instructed to use another program to strip binaries.
-v Cause install to be verbose, showing files as they are installed or backed up.

By default, install preserves all file flags, with the exception of the "nodump" flag.

The install utility attempts to prevent moving a file onto itself.

Installing /dev/null creates an empty file.


The install utility checks for the presence of the STRIPBIN environment variable and if present, uses the assigned value as the program to run if and when the -s option has been specified.


If either -S option is specified, or the -C or -p option is used in conjunction with the -s option, temporary files named INS@XXXX, where XXXX is decided by mkstemp(3), are created in the target directory.


.Ex -std


Historically install moved files by default. The default was changed to copy in
.Fx 4.4 .


chflags(1), chgrp(1), chmod(1), cp(1), mv(1), strip(1), mmap(2), chown(8)




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