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Full Discussion: Can i delete this file ?
Top Forums UNIX for Beginners Questions & Answers Can i delete this file ? Post 303033531 by Don Cragun on Sunday 7th of April 2019 05:10:28 PM
Old 04-07-2019
Hi MadeInGermany,
I was just quoting from the MacOS mkfile(8) man page:
Code:
NAME
       mkfile - create a file

SYNOPSIS
       mkfile [ -nv ] size[b|k|m|g] filename ...

DESCRIPTION
       mkfile  creates  one  or  more  files that are suitable for use as NFS-
       mounted swap areas.  The sticky bit is set, and the file is padded with
       zeroes  by  default.   Non-root  users  must  set  the sticky bit using
       chmod(1).  The default size unit is bytes, but the  following  suffixes
       may  be  used  to  multiply  by  the given factor: b (512), k (1024), m
       (1048576), and g (1073741824).
... ... ...

I didn't remember it being for NFS only either, but I haven't personally used mkfile since I left Sun over a decade ago.
 

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LEARN ABOUT CENTOS

swaplabel

SWAPLABEL(8)						       System Administration						      SWAPLABEL(8)

NAME

       swaplabel - print or change the label or UUID of a swap area

SYNOPSIS

       swaplabel [-L label] [-U UUID] device

DESCRIPTION

       swaplabel will display or change the label or UUID of a swap partition located on device (or regular file).

       If the optional arguments -L and -U are not given, swaplabel will simply display the current swap-area label and UUID of device.

       If  an  optional argument is present, then swaplabel will change the appropriate value on device.  These values can also be set during swap
       creation using mkswap(8).  The swaplabel utility allows to change the label or UUID on an actively used swap device.

OPTIONS

       -h, --help
	      Display help text and exit.

       -L, --label label
	      Specify a new label for the device.  Swap partition labels can be at most 16 characters long.  If label is longer  than  16  charac-
	      ters, swaplabel will truncate it and print a warning message.

       -U, --uuid UUID
	      Specify a new UUID for the device.  The  UUID must be in the standard 8-4-4-4-12 character format, such as is output by uuidgen(1).

AUTHOR

       swaplabel was written by Jason Borden <jborden@bluehost.com> and Karel Zak <kzak@redhat.com>.

ENVIRONMENT

       LIBBLKID_DEBUG=0xffff
	      enables debug output.

AVAILABILITY

       The swaplabel command is part of the util-linux package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux/.

SEE ALSO

       mkswap(8), swapon(8), uuidgen(1)

util-linux							    April 2010							      SWAPLABEL(8)
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