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Can i delete this file ?

 
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Old 04-08-2019
Also, memory is so cheap these days, why not use add a lot of memory, 16GB total for example, and have plenty of headroom.

I don't know the criticality of the application, but for the unix.com server, I like to have double the memory the system typically requires, for those days when things go south on the net or a process hangs, etc.

Code:
top - 02:18:33 up 68 days, 54 min,  1 user,  load average: 0.76, 0.52, 0.48
Tasks: 226 total,   2 running, 160 sleeping,   0 stopped,   1 zombie
%Cpu(s):  3.3 us,  0.4 sy,  0.0 ni, 96.2 id,  0.0 wa,  0.0 hi,  0.1 si,  0.0 st
KiB Mem : 65842320 total, 27976264 free,  3082788 used, 34783268 buff/cache
KiB Swap:  7995388 total,  7995388 free,        0 used. 61988500 avail Mem

But of course unix.com is critical infrastructure for many people on the net Smilie

So, I don't like any bits to swap, if I can help it, since faster is generally better for users.
 
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LEARN ABOUT LINUX

swaplabel

SWAPLABEL(8)						     Linux Programmer's Manual						      SWAPLABEL(8)

NAME

       swaplabel - Print or change the label / UUID of a swap area

SYNOPSIS

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

DESCRIPTION

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

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

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

OPTIONS

       -h, --help
	      Print help and exit.

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

       -U, --uuid uuid
	      Specify a new UUID for device.  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>.

AVAILABILITY

       swaplabel 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)

Linux								   2 April 2010 						      SWAPLABEL(8)