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Removes (deletes) files, directories, device nodes and symbolic links rmdir: Removes empty directories shred: Overwrites a file to hide its contents, and optionally deletes it sync: Flushes file system buffers touch: Changes file timestamps; creates file truncate: Shrink or extend the size of a file to the specified size vdir: Is exactly like ...
By default, the Single UNIX Specification (SUS) specifies that du is to display the file space allocated to each file and directory contained in the current directory. Links will be displayed as the size of the link file, not what is being linked to; the size of the content of directories is displayed, as expected.
This is a list of POSIX (Portable Operating System Interface) commands as specified by IEEE Std 1003.1-2024, which is part of the Single UNIX Specification (SUS). These commands can be found on Unix operating systems and most Unix-like operating systems.
In Unix-like operating systems, find is a command-line utility that locates files based on some user-specified criteria and either prints the pathname of each matched object or, if another action is requested, performs that action on each matched object.
For example, the Unix Bash shell command mv *.txt textfiles/ moves all files with names ending in .txt from the current directory to the directory textfiles. Here, * is a wildcard and *.txt is a glob pattern. The wildcard * stands for "any string of any length including empty, but excluding the path separator characters (/ in unix and \ in ...
A symbolic link contains a text string that is automatically interpreted and followed by the operating system as a path to another file or directory. This other file or directory is called the "target". The symbolic link is a second file that exists independently of its target. If a symbolic link is deleted, its target remains unaffected.
Path of the matching item, double quoted, and relative to the starting directory (given by /P). Each path begins with a dot and backslash (.\). @isdir Evaluates to the literal string TRUE if the matching item is a directory, or FALSE if not. @fsize Size of the matching item, in bytes. Directories report a size of zero. @fdate
The most common special file is the directory. The layout of a directory file is defined by the filesystem used. As several filesystems are available under Unix, both native and non-native, there is no one directory file layout. A directory is marked with a d as the first letter in the mode field in the output of ls -dl [5] or stat, e.g.