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In Unix-like operating systems, unlink is a system call and a command line utility to delete files. The program directly interfaces the system call, which removes the file name and (but not on GNU systems) directories like rm and rmdir. [1] If the file name was the last hard link to the file, the file itself is deleted as soon as no program has ...
Changes the permissions of a file or directory cp: Copies a file or directory dd: Copies and converts a file df: Shows disk free space on file systems dir: Is exactly like "ls -C -b". (Files are by default listed in columns and sorted vertically.) dircolors: Set up color for ls: install: Copies files and set attributes ln: Creates a link to a ...
Perl Programming Documentation, also called perldoc, is the name of the user manual for the Perl 5 programming language. It is available in several different formats, including online in HTML and PDF. The documentation is bundled with Perl in its own format, known as Plain Old Documentation (pod).
For example, to add simple documentation to bash scripts, which can then be easily converted to man pages. [1] Such uses rely on language-specific hacks to hide the pod part(s), such as (in bash) prefixing the POD section with the line :<<=cut which works by calling bash's no-op : command, with the whole block of Pod as a here document as input ...
Report or filter out repeated lines in a file Version 3 AT&T UNIX unlink: Filesystem Optional (XSI) Call the unlink function Version 1 AT&T UNIX uucp: Network Optional (UU) System-to-system copy Version 7 AT&T UNIX uudecode: Network Mandatory Decode a binary file 4BSD uuencode: Network Mandatory Encode a binary file 4BSD uustat: Network ...
rm (short for remove) is a basic command on Unix and Unix-like operating systems used to remove objects such as computer files, directories and symbolic links from file systems and also special files such as device nodes, pipes and sockets, similar to the del command in MS-DOS, OS/2, and Microsoft Windows.
Commands which read or write file contents will access the contents of the target file. The POSIX directory listing application, ls, denotes symbolic links with an arrow after the name, pointing to the name of the target file (see following example), when the long directory list is requested (-l option). When a directory listing of a symbolic ...
It includes all commands that are standardized by the Internet Engineering Task Force (IETF) in RFC 959, plus extensions. Note that most command-line FTP clients present their own non-standard set of commands to users. For example, GET is the common user command to download a file instead of the raw command RETR.