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Top Forums Shell Programming and Scripting Compare the string in different files Post 302922961 by Don Cragun on Wednesday 29th of October 2014 12:40:35 PM
Old 10-29-2014
Quote:
Originally Posted by ghostdog74
Code:
dspmq | cut -f2 -d "(" | cut -f1 -d ")" > B.txt
fgrep -f A.txt B.txt
rm B.txt A.txt

Why would you remove A.txt and B.txt? I didn't see anything in the OP's posts indicating that either file would no longer be needed after one run of this script.

Why invoke cut twice and fgrep once when a single invocation of awk easily replaces all three.

Of course we are both assuming that the output fromdspmq contains a parenthesized string before any spaces or tabs. Since we don't know what that output actually contains,we're both flying blind.
 

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creatbyproc.d(1m)						   USER COMMANDS						 creatbyproc.d(1m)

NAME
creatbyproc.d - snoop creat()s by process name. Uses DTrace. SYNOPSIS
creatbyproc.d DESCRIPTION
creatbyproc.d is a DTrace OneLiner to print file creations as it occurs, including the name of the process calling the open. This matches file creates from the creat() system call; not all file creation occurs in this way, sometimes it is through open() with a O_CREAT flag, this script will not monitor that activity. Docs/oneliners.txt and Docs/Examples/oneliners_examples.txt in the DTraceToolkit contain this as a oneliner that can be cut-n-paste to run. Since this uses DTrace, only users with root privileges can run this command. EXAMPLES
This prints process names and new pathnames until Ctrl-C is hit. # creatbyproc.d FIELDS
CPU The CPU that recieved the event ID A DTrace probe ID for the event FUNCTION:NAME The DTrace probe name for the event remaining fields The first is the name of the process, the second is the file pathname. DOCUMENTATION
See the DTraceToolkit for further documentation under the Docs directory. The DTraceToolkit docs may include full worked examples with ver- bose descriptions explaining the output. EXIT
creatbyproc.d will run forever until Ctrl-C is hit. AUTHOR
Brendan Gregg [Sydney, Australia] SEE ALSO
dtrace(1M) version 1.00 Jun 11, 2005 creatbyproc.d(1m)
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