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Full Discussion: Help with getting a Ctrl-C trap working w/ a piped tail -f...
Top Forums Shell Programming and Scripting Help with getting a Ctrl-C trap working w/ a piped tail -f... Post 302512558 by chatguy on Sunday 10th of April 2011 11:36:37 PM
Old 04-11-2011
MySQL [Solved] How do you get a "Ctrl-C trap" working w/ a piped "tail -f" ?
Hi All,

Although each line below seems to work by itself, I've been having trouble getting the Control-C trap working when I add the "|perl -pe..." to the end of the tail -f line, below.
(That |perl -pe statement basically just adds color to highlight the word "ERROR" while tailing a log file)

...Does anyone know how to make the 2 lines below co-exist together, so that the CTRL-C trap still works, below?
Code:
trap 'print "\033[2K\033[41;1mUSER STOPPED LOG TAIL";' ERR
tail -f /var/log/logfile.log |perl -pe 's/ERROR/\e[41;1m$&\e[0m/g'

Thank you so much for the help,
CG
Last edited by chatguy; 04-15-2011 at 02:29 AM.. Reason: [Solved]
 

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LEARN ABOUT OPENSOLARIS

mdlogd

mdlogd(1M)						  System Administration Commands						mdlogd(1M)

NAME

       mdlogd - Solaris Volume Manager daemon

SYNOPSIS

       mdlogd

DESCRIPTION

       mdlogd implements a simple daemon that watches the system console looking for messages written by the Solaris Volume Manger. When a Solaris
       Volume Manager message is detected, mdlogd sends a generic SNMP trap.

       To enable traps, you must configure mdlogd into the SNMP framework. See .

USAGE

       mdlogd implements the following SNMP MIB:

	 SOLARIS-VOLUME-MGR-MIB DEFINITIONS ::= BEGIN
		 IMPORTS
			  enterprises FROM RFC1155-SMI
			  DisplayString FROM SNMPv2-TC;

		 -- Sun Private MIB for Solaris Volume Manager

		 sun	   OBJECT IDENTIFIER ::= { enterprises 42 }
		 sunSVM       OBJECT IDENTIFIER ::= { sun 104 }

		 -- this is actually just the string from /dev/log that
		 -- matches the md: regular expressions.
		 -- This is an interim SNMP trap generator to provide
		 -- information until a more complete version is available.

		 -- this definition is a formalization of the old
		 -- Solaris DiskSuite mdlogd trap mib.

		 svmOldTrapString OBJECT-TYPE
				 SYNTAX DisplayString (SIZE (0..255))
				 ACCESS read-only
				 STATUS mandatory
				 DESCRIPTION
				 "This is the matched string that
				  was obtained from /dev/log."
		 ::= { sunSVM 1 }

		 -- SVM Compatibility ( error trap )

		 svmNotice	  TrapTRAP-TYPE
				 ENTERPRISE sunSVM
				 VARIABLES { svmOldTrapString }
				 DESCRIPTION
					 "SVM error log trap for NOTICE.
					  This matches 'NOTICE: md:'"
		 ::= 1

		 svmWarningTrap  TRAP-TYPE
				 ENTERPRISE sunSVM
				 VARIABLES { svmOldTrapString }
				 DESCRIPTION
					 "SVM error log trap for WARNING..
					  This matches 'WARNING: md:'"
		 ::= 2

		 svmPanicTrap	 TRAP-TYPE
				 ENTERPRISE sunSVM
				 VARIABLES { svmOldTrapString }
				 DESCRIPTION
					 "SVM error log traps for PANIC..
					 This matches 'PANIC: md:'"
		 ::= 3
	 END

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWlvma, SUNWlvmr	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Obsolete			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       snmpdx(1M), attributes(5)

SunOS 5.11							    3 Jun 2004								mdlogd(1M)
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