System administration command. Used primarily in Makefiles to update files. install copies files into user-specified directories. Similar to cp, but attempts to set permission modes, owner, and group. The source may be a file or directory, or a list of files and directories. The destination should be a single file or directory.
Back up any existing files. When using the long version of the command, the optional control parameter controls the kind of backup. When no control is specified, install will attempt to read the control value from the VERSION_CONTROL environment variable. Accepted values are:
Never make backups.
Make numbered backups.
Match existing backups, numbered or simple.
Always make simple backups.
Create any missing directories.
Set group ID of new file to group (privileged users only).
Print help message, then exit.
Set permissions of new file to mode (octal or symbolic). By default, the mode is 0755.
Set ownership to owner or, if unspecified, to root (privileged users only).
Preserve access and modification times on source files and directories.
Strip symbol tables.
Print name of each directory as it is created.
Print version, then exit.
Do not overwrite file when the ...