----- Original Message ----- > On 02/13/12 06:23, Dave Anderson wrote: > > -h [option] > > --help [option] > > Without an option argument, display a crash usage > > help message. > > If the option argument is a crash command name, > > I've learned how to look without seeing sometimes. :( Thanks! > Interactive would be marginally easier, but not enough to make > it worth the effort. > > > And although it's undocumented, you can get a complete dump of all pages > > by entering "crash -h all". > > That would be a good sentence to add to the "--help" clause. Yeah, I'll do that. I forgot about that option when the man page was overhauled recently. > > > Alternatively, if you've got a browser window open, go to the "Builtin Help" > > page of the crash whitepaper, and just click on the command you're > > interested in: > > > > http://people.redhat.com/anderson/crash_whitepaper/#HELP > > _That_ is definitely nice! > > Now that I'm futzing with this, another RFE or else "Request for how > to really do it": > > a "source" command. In my environment, we've got 16 (yes, *sixteen*) loadable > modules that need to get "mod -s MODNAME /path/to/modname.ko" -ed. > So not being a big fan of typing, my preference would be to: > > mod | script-to-look-for-modules > mod-s-commands > source mod-s-commands > > and presto, my .ko files are loaded. > So, is there an easier way, or is the "source" command reasonable? There's 3 possibilities... Put the mod commands in a .crashrc file in the current directory, or in your $HOME directory, like this example: # cat .crashrc mod -s nfsd mod -s nfs # crash crash 6.0.3 Copyright (C) 2002-2012 Red Hat, Inc. Copyright (C) 2004, 2005, 2006 IBM Corporation Copyright (C) 1999-2006 Hewlett-Packard Co Copyright (C) 2005, 2006 Fujitsu Limited Copyright (C) 2006, 2007 VA Linux Systems Japan K.K. Copyright (C) 2005 NEC Corporation Copyright (C) 1999, 2002, 2007 Silicon Graphics, Inc. Copyright (C) 1999, 2000, 2001, 2002 Mission Critical Linux, Inc. This program is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Enter "help copying" to see the conditions. This program has absolutely no warranty. Enter "help warranty" for details. GNU gdb (GDB) 7.3.1 Copyright (C) 2011 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-unknown-linux-gnu"... KERNEL: /usr/lib/debug/lib/modules/2.6.32-70.el6.x86_64/vmlinux DUMPFILE: /dev/crash CPUS: 4 DATE: Mon Feb 13 12:11:31 2012 UPTIME: 58 days, 22:21:22 LOAD AVERAGE: 3.30, 3.10, 2.96 TASKS: 340 NODENAME: waste.usersys.redhat.com RELEASE: 2.6.32-70.el6.x86_64 VERSION: #1 SMP Wed Aug 25 10:17:53 EDT 2010 MACHINE: x86_64 (2792 Mhz) MEMORY: 1 GB PID: 2405 COMMAND: "crash" TASK: ffff88003c3e94a0 [THREAD_INFO: ffff880027f02000] CPU: 0 STATE: TASK_RUNNING (ACTIVE) crash> mod -s nfsd MODULE NAME SIZE OBJECT FILE ffffffffa05955c0 nfsd 302737 /lib/modules/2.6.32-70.el6.x86_64/kernel/fs/nfsd/nfsd.ko crash> mod -s nfs MODULE NAME SIZE OBJECT FILE ffffffffa0619120 nfs 348522 /lib/modules/2.6.32-70.el6.x86_64/kernel/fs/nfs/nfs.ko crash> Note that the two mod commands above were not entered manually, but were displayed and done automatically. Or do it during a crash session by putting the commands in a file, and run the command's contents by redirecting: crash> !cat input mod -s nfsd mod -s nfs crash> < input crash> mod -s nfsd MODULE NAME SIZE OBJECT FILE ffffffffa05955c0 nfsd 302737 /lib/modules/2.6.32-70.el6.x86_64/kernel/fs/nfsd/nfsd.ko crash> mod -s nfs MODULE NAME SIZE OBJECT FILE ffffffffa0619120 nfs 348522 /lib/modules/2.6.32-70.el6.x86_64/kernel/fs/nfs/nfs.ko crash> There's also the new redirection capability for individual commands, where each line in the input file will be appended to the command line entered: crash> !cat input nfsd nfs crash> mod -s < input MODULE NAME SIZE OBJECT FILE ffffffffa05955c0 nfsd 302737 /lib/modules/2.6.32-70.el6.x86_64/kernel/fs/nfsd/nfsd.ko MODULE NAME SIZE OBJECT FILE ffffffffa0619120 nfs 348522 /lib/modules/2.6.32-70.el6.x86_64/kernel/fs/nfs/nfs.ko crash> Hopefully one of the above suits your needs... Dave -- Crash-utility mailing list Crash-utility@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/crash-utility
