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Top Forums Shell Programming and Scripting Grep can't match expected but output all Post 302878033 by Corona688 on Wednesday 4th of December 2013 10:33:57 AM
Old 12-04-2013
It's likely printing to stderr, not stdout, which bypasses grep completely. Redirect stderr into stdout.

Code:
service --status-all 2>&1 |grep dbus

 

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kacpimon(8)						      System Manager's Manual						       kacpimon(8)

NAME
kacpimon - Kernel ACPI Event Monitor SYNOPSIS
kacpimon DESCRIPTION
kacpimon is a monitor program that connects to three sources of ACPI events: 1. /proc/acpi/event 2. netlink 3. the input layer (/dev/input/event*) kacpimon then reports on what it sees while it is connected. Use kacpimon to make sure your kernel is sending acpi-related events via the three sources mentioned above. Since both acpid and kacpimon connect to the same sources, be sure to kill acpid before running kacpimon: sudo killall acpid Also be sure to run kacpimon as root or else it won't be able to open /proc/acpi/event or the input layer: sudo ./kacpimon If you want to pipe the output of kacpimon to a file, be sure to use the "Esc" key to exit rather than Ctrl-C. Using Ctrl-C will cause output to be lost. FILES
/proc/acpi/event kernel ACPI event file /dev/input/event* input layer event files SEE ALSO
acpi_listen(8), acpid(8) AUTHOR
Ted Felix <www.tedfelix.com> TODO
- Make kacpimon something that actually gets installed? LICENSE
kacpimon - Kernel ACPI Event Monitor Copyright (C) 2009 Ted Felix (www.tedfelix.com) This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MER- CHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Or visit www.gnu.org. Nov 2009 kacpimon(8)
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