— Built-in Function: [err, msg] = rename (old, new)

Change the name of file old to new.

If successful, err is 0 and msg is an empty string. Otherwise, err is nonzero and msg contains a system-dependent error message.

See also: ls, dir.

— Built-in Function: [err, msg] = link (old, new)

Create a new link (also known as a hard link) to an existing file.

If successful, err is 0 and msg is an empty string. Otherwise, err is nonzero and msg contains a system-dependent error message.

See also: symlink.

— Built-in Function: [err, msg] = symlink (old, new)

Create a symbolic link new which contains the string old.

If successful, err is 0 and msg is an empty string. Otherwise, err is nonzero and msg contains a system-dependent error message.

See also: link, readlink.

— Built-in Function: [result, err, msg] = readlink (symlink)

Read the value of the symbolic link symlink.

If successful, result contains the contents of the symbolic link symlink, err is 0 and msg is an empty string. Otherwise, err is nonzero and msg contains a system-dependent error message.

See also: link, symlink.

— Built-in Function: [err, msg] = unlink (file)

Delete the file named file.

If successful, err is 0 and msg is an empty string. Otherwise, err is nonzero and msg contains a system-dependent error message.

— Built-in Function: [files, err, msg] = readdir (dir)

Return names of the files in the directory dir as a cell array of strings. If an error occurs, return an empty cell array in files.

If successful, err is 0 and msg is an empty string. Otherwise, err is nonzero and msg contains a system-dependent error message.

See also: dir, glob.

— Built-in Function: [status, msg, msgid] = mkdir (dir)

Create a directory named dir.

If successful, status is 1, with msg and msgid empty character strings. Otherwise, status is 0, msg contains a system-dependent error message, and msgid contains a unique message identifier.

See also: rmdir.

— Built-in Function: [status, msg, msgid] = rmdir (dir)
— Built-in Function: [status, msg, msgid] = rmdir (dir, "s")

Remove the directory named dir.

If successful, status is 1, with msg and msgid empty character strings. Otherwise, status is 0, msg contains a system-dependent error message, and msgid contains a unique message identifier.

If the optional second parameter is suplied, recursively remove all subdirectories as well.

See also: mkdir, confirm_recursive_rmdir.

— Built-in Function: [err, msg] = mkfifo (name, mode)

Create a fifo special file named name with file mode mode

If successful, err is 0 and msg is an empty string. Otherwise, err is nonzero and msg contains a system-dependent error message.

— Built-in Function: umask (mask)

Set the permission mask for file creation. The parameter mask is an integer, interpreted as an octal number. If successful, returns the previous value of the mask (as an integer to be interpreted as an octal number); otherwise an error message is printed.

— Built-in Function: [info, err, msg] = stat (file)
— Built-in Function: [info, err, msg] = lstat (file)

Return a structure s containing the following information about file.

dev

ID of device containing a directory entry for this file.

ino

File number of the file.

mode

File mode, as an integer. Use the functions S_ISREG, S_ISDIR, S_ISCHR, S_ISBLK, S_ISFIFO, S_ISLNK, or S_ISSOCK to extract information from this value.

modestr

File mode, as a string of ten letters or dashes as would be returned by ls -l.

nlink

Number of links.

uid

User ID of file's owner.

gid

Group ID of file's group.

rdev

ID of device for block or character special files.

size

Size in bytes.

atime

Time of last access in the same form as time values returned from time. See Timing Utilities.

mtime

Time of last modification in the same form as time values returned from time. See Timing Utilities.

ctime

Time of last file status change in the same form as time values returned from time. See Timing Utilities.

blksize

Size of blocks in the file.

blocks

Number of blocks allocated for file.

If the call is successful err is 0 and msg is an empty string. If the file does not exist, or some other error occurs, s is an empty matrix, err is −1, and msg contains the corresponding system error message.

If file is a symbolic link, stat will return information about the actual file the is referenced by the link. Use lstat if you want information about the symbolic link itself.

For example,

          [s, err, msg] = stat ("/vmlinuz")
                => s =
                  {
                    atime = 855399756
                    rdev = 0
                    ctime = 847219094
                    uid = 0
                    size = 389218
                    blksize = 4096
                    mtime = 847219094
                    gid = 6
                    nlink = 1
                    blocks = 768
                    mode = -rw-r--r--
                    modestr = -rw-r--r--
                    ino = 9316
                    dev = 2049
                  }
               => err = 0
               => msg =
     

— Built-in Function: glob (pattern)

Given an array of strings (as a char array or a cell array) in pattern, return a cell array of file names that match any of them, or an empty cell array if no patterns match. Tilde expansion is performed on each of the patterns before looking for matching file names. For example,

          glob ("/vm*")
               => "/vmlinuz"
     

See also: dir, ls, stat, readdir.

— Built-in Function: fnmatch (pattern, string)

Return 1 or zero for each element of string that matches any of the elements of the string array pattern, using the rules of filename pattern matching. For example,

          fnmatch ("a*b", ["ab"; "axyzb"; "xyzab"])
               => [ 1; 1; 0 ]
     

— Built-in Function: file_in_path (path, file)
— Built-in Function: file_in_path (path, file, "all")

Return the absolute name of file if it can be found in path. The value of path should be a colon-separated list of directories in the format described for the built-in variable LOADPATH. If no file is found, return an empty matrix. For example,

          file_in_path (EXEC_PATH, "sh")
               => "/bin/sh"
     

If the second argument is a cell array of strings, search each directory of the path for element of the cell array and return the first that matches.

If the third optional argument "all" is supplied, return a cell array containing the list of all files that have the same name in the path. If no files are found, return an empty cell array.

Note that file_in_path does not expand leading, trailing, or doubled colons the way that file_in_loadpath does. See also See Function Files, for an explanation of how colon expansion is applied to LOADPATH.

See also: file_in_loadpath.

— Built-in Function: tilde_expand (string)

Performs tilde expansion on string. If string begins with a tilde character, (`~'), all of the characters preceding the first slash (or all characters, if there is no slash) are treated as a possible user name, and the tilde and the following characters up to the slash are replaced by the home directory of the named user. If the tilde is followed immediately by a slash, the tilde is replaced by the home directory of the user running Octave. For example,

          tilde_expand ("~joeuser/bin")
               => "/home/joeuser/bin"
          tilde_expand ("~/bin")
               => "/home/jwe/bin"