Sort options. Sync usage with man page.
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wiz
parent
2161b003f1
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@ -1,4 +1,4 @@
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.\" $NetBSD: swapctl.8,v 1.34 2006/08/23 20:53:53 wiz Exp $
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.\" $NetBSD: swapctl.8,v 1.35 2006/08/23 20:59:09 wiz Exp $
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.\"
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.\" Copyright (c) 1997 Matthew R. Green
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.\" All rights reserved.
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@ -56,8 +56,7 @@
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.Ar path
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.Nm
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.Fl l | Fl s
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.Op Fl k | Fl m | Fl g
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.Op Fl h
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.Op Fl k | Fl m | Fl g | Fl h
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.Nm
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.Fl z
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.Nm swapon
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@ -106,37 +105,6 @@ type.
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If no swap devices are configured,
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.Nm
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will exit with an error code.
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.It Fl D
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The
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.Fl D
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option requires that a
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.Ar dumpdev
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also be in the argument list.
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The kernel dump device is set to
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.Ar dumpdev .
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The word
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.Dq none
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can be used instead of a
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.Ar dumpdev
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to disable the currently set dump device.
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This change is made via the
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.Xr swapctl 2
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system call.
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The dump device is used when the system crashes
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to write a current snapshot of real memory, to be saved later with
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.Xr savecore 8
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at system reboot, and analyzed to determine the problem.
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.It Fl U
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This option causes
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.Nm
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to read the
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.Pa /etc/fstab
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file for devices and files with a
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.Dq sw
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type, and remove all these entries as swap devices.
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If no swap devices are unconfigured,
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.Nm
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will exit with an error code.
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.It Fl a
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The
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.Fl a
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@ -159,20 +127,54 @@ option, for backwards compatibility.
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The
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.Fl c
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option changes the priority of the listed swap device or file.
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.It Fl D
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The
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.Fl D
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option requires that a
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.Ar dumpdev
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also be in the argument list.
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The kernel dump device is set to
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.Ar dumpdev .
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The word
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.Dq none
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can be used instead of a
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.Ar dumpdev
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to disable the currently set dump device.
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This change is made via the
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.Xr swapctl 2
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system call.
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The dump device is used when the system crashes
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to write a current snapshot of real memory, to be saved later with
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.Xr savecore 8
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at system reboot, and analyzed to determine the problem.
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.It Fl d
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The
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.Fl d
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option removes the listed
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.Ar path
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from the kernel's list of swap devices or files.
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.It Fl g
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The
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.Fl g
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option uses (1024 * 1024 * 1024) byte blocks instead of the default 512 byte.
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.It Fl h
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The
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.Fl h
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option uses
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.Xr humanize_number 3
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to display the sizes.
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.It Fl k
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The
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.Fl k
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option uses 1024 byte blocks instead of the default 512 byte.
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.It Fl l
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The
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.Fl l
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option lists the current swap devices and files, and their usage statistics.
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.It Fl s
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.It Fl m
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The
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.Fl s
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option displays a single line summary of current swap statistics.
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.Fl m
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option uses (1024 * 1024) byte blocks instead of the default 512 byte.
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.It Fl p
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The
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.Fl p
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@ -186,24 +188,10 @@ This works with the
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and
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.Fl l
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options.
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.It Fl k
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.It Fl s
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The
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.Fl k
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option uses 1024 byte blocks instead of the default 512 byte.
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.It Fl m
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The
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.Fl m
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option uses (1024 * 1024) byte blocks instead of the default 512 byte.
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.It Fl g
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The
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.Fl g
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option uses (1024 * 1024 * 1024) byte blocks instead of the default 512 byte.
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.It Fl h
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The
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.Fl h
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option uses
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.Xr humanize_number 3
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to display the sizes.
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.Fl s
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option displays a single line summary of current swap statistics.
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.It Fl t
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This flag modifies the function of the
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.Fl A
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@ -226,6 +214,17 @@ to be added.
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This option is useful in early system startup, where swapping
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may be needed before all file systems are available, such as during
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disk checks of large file systems.
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.It Fl U
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This option causes
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.Nm
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to read the
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.Pa /etc/fstab
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file for devices and files with a
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.Dq sw
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type, and remove all these entries as swap devices.
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If no swap devices are unconfigured,
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.Nm
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will exit with an error code.
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.It Fl z
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The
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.Fl z
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@ -1,4 +1,4 @@
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/* $NetBSD: swapctl.c,v 1.30 2006/08/22 14:08:36 martin Exp $ */
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/* $NetBSD: swapctl.c,v 1.31 2006/08/23 20:59:09 wiz Exp $ */
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/*
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* Copyright (c) 1996, 1997, 1999 Matthew R. Green
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@ -58,7 +58,7 @@
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#include <sys/cdefs.h>
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#ifndef lint
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__RCSID("$NetBSD: swapctl.c,v 1.30 2006/08/22 14:08:36 martin Exp $");
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__RCSID("$NetBSD: swapctl.c,v 1.31 2006/08/23 20:59:09 wiz Exp $");
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#endif
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@ -587,12 +587,12 @@ usage(void)
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fprintf(stderr, "usage: %s -A [-p priority] [-t blk|noblk]\n",
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progname);
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fprintf(stderr, " %s -D dumppath\n", progname);
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fprintf(stderr, " %s -U [-t blk|noblk]\n", progname);
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fprintf(stderr, " %s -a [-p priority] path\n", progname);
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fprintf(stderr, " %s -c -p priority path\n", progname);
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fprintf(stderr, " %s -D dumpdev|none\n", progname);
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fprintf(stderr, " %s -d path\n", progname);
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fprintf(stderr, " %s -l | -s [-k|-m|-g|-h]\n", progname);
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fprintf(stderr, " %s -U [-t blk|noblk]\n", progname);
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fprintf(stderr, " %s -z\n", progname);
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exit(1);
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}
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