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Top Forums Shell Programming and Scripting Parsing a $VARIABLE within a script. Post 302708479 by dlundwall on Monday 1st of October 2012 03:35:04 PM
Old 10-01-2012
Power sed Error using the syntax provided

Quote:
Originally Posted by Chubler_XL
The solution I posted earlier should work for this data eg:

Code:
EVENTMSG="Sept 21, 2012 8:21:55 PM MDT - Device Main_Server_01 of type Host_Server is no longer responding to requests.  This condition has persisted for more than 3 minutes.
 
 Alert Code: Danger
 Server Instance: 31415
 Severity: Critical"
SI=$(echo "$EVENTMSG" | sed -nE 's/.+Server Instance:\s(\S+)/\1/p')
echo $SI

Output is:
Code:
31415

If you know extended regular expressions, and I suspect you do as you posted the above RE in your first post.
You should be able to tailor the sed command to fetch any value you are after.
When using the above code I am getting an error. First, here is the code I used taken from what you gave me earlier:
Code:
echo "Alarm SET:"
echo ""
echo "Date:            " $DATE
echo "Time:            " $TIME
#echo "DeviceType:      " $DTYPE
#echo "Mtype:           " $MTYPE
echo "ModelName:       " $MNAME
#echo "AlarmID:         " $AID
TST=$(echo "$EVENTMSG" | sed -ne 's/.*odelName=(\w+[^.]+)/\1/p')
echo "Non-FQDN Name:    " $TST
Severity:                  " $SEV

Here is the Output of when a message came in:
Code:
Alarm SET:
Date:             10/01/2012
Time:             13:26:49
ModelName:        twa-casql01.c.com
sed: -e expression #1, char 28: invalid reference \1 on `s' command's RHS
Non-FQDN Name:
Severity:         MAJOR

as you can see, I am getting an "invalid reference" to \1. Any ideas?

Thanks in advance!!Smilie
 

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echo(3XCURSES)						  X/Open Curses Library Functions					    echo(3XCURSES)

NAME
echo, noecho - enable/disable terminal echo SYNOPSIS
cc [ flag... ] file... -I /usr/xpg4/include -L /usr/xpg4/lib -R /usr/xpg4/lib -lcurses [ library... ] c89 [ flag... ] file... -lcurses [ library... ] #include <curses.h> int echo(void); int noecho(void); DESCRIPTION
The echo() function enables Echo mode for the current screen. The noecho() function disables Echo mode for the current screen. Initially, curses software echo mode is enabled and hardware echo mode of the tty driver is disabled. The echo() and noecho() functions control soft- ware echo only. Hardware echo must remain disabled for the duration of the application, else the behavior is undefined. RETURN VALUES
Upon successful completion, these functions return OK. Otherwise, they return ERR. ERRORS
No errors are defined. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ |MT-Level |Unsafe | +-----------------------------+-----------------------------+ SEE ALSO
getch(3XCURSES), getstr(3XCURSES), initscr(3XCURSES), libcurses(3XCURSES), scanw(3XCURSES), attributes(5), standards(5) SunOS 5.11 5 Jun 2002 echo(3XCURSES)
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