Linux in a Nutshell, Fifth Edition

mmd | 307

Linux

Commands

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Copyright © 2006 O’Reilly & Associates, Inc. All rights reserved.

-v0 Create an old style swap area.

-v1 Create a new style swap area. (The default behavior on newer

kernels.)

mktemp

mktemp [options] [template]

Generate a unique temporary filename for use in a script. The file-

name is based on the specified template, which may be any

filename with at least six Xs appended (e.g., /tmp/mytemp.

XXXXXX). mktemp replaces the Xs with the current process

number and/or a unique letter combination. The file is created

with mode 0600 (unless -u is specified), and the filename is written

to standard output. With no template specified, the default file

tmp.XXXXXXXXXX is created and the -t option is implied.

Options

-d Make a directory, not a file.

-q Fail silently in case of error. Useful to prevent error output

from being sent to standard error.

-p directory

Generate the temporary file in the specified directory.

-t Generate a path to the file rooted in a temporary directory.

The directory is taken from the TMPDIR environment vari-

able if it is set, or from the -p option. If neither is set, /tmp is

used.

-u Operate in “unsafe” mode and unlink the temporary file

before mktemp exits. Use of this option is not recommended.

-V Print version information and exit.

mlabel

mlabel [options] drive[label]

Label an MS-DOS filesystem (maximum of 11 characters), ...