I assumed that your command ran a single time, though looking back at your example maybe it executes continuously.
Small changes:
The only catch to this is that your command needs to block otherwise you'll be executing a pretty tight loop and possibly taxing resources. My first example is preferred as it puts you in control of how often you execute the command that checks on the system state.
---------- Post updated at 21:22 ---------- Previous update was at 21:14 ----------
Quote:
Originally Posted by monty77
How do I use grep -vE (or something else if more appropriate) to strip and blanks from my command output and just catch the value itself?
I don't think it's the grep command. Can you post the output of the first few lines of just this part of your command:
I suspect that maybe the line is bar separated and not space/tab separated and thus printing $7 might be producing null output because there is no field 7. If the output is bar separated, then you can change your awk command to supply -F "|" to specify the field separator.
Hi guys,
Is there a way a script can run an SQL statement and dump the results into a variable which can then be used later in the script?
Thanks. (3 Replies)
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Hi,
I have this problem where sometimes my files would go missing when I schedule my crontab to run the SCP command to get file from the SFTP server.
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file
/tmp/`date +y`log
/tmp/unix`date +y`log (1 Reply)
I am using UNIX to create a script on our system. I have setup my commands to append their output to an outage file. However, some of the commands return no output and so I would like something to take their place.
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Discussion started by: jbrass
4 Replies
LEARN ABOUT LINUX
zegrep
ZGREP(1) General Commands Manual ZGREP(1)NAME
zgrep - search possibly compressed files for a regular expression
SYNOPSIS
zgrep [ grep_options ] [ -e ] pattern filename...
DESCRIPTION
Zgrep invokes grep on compressed or gzipped files. These grep options will cause zgrep to terminate with an error code:
(-[drRzZ]|--di*|--exc*|--inc*|--rec*|--nu*). All other options specified are passed directly to grep. If no file is specified, then the
standard input is decompressed if necessary and fed to grep. Otherwise the given files are uncompressed if necessary and fed to grep.
If the GREP environment variable is set, zgrep uses it as the grep program to be invoked.
EXIT CODE
2 - An option that is not supported was specified.
AUTHOR
Charles Levert (charles@comm.polymtl.ca)
SEE ALSO grep(1), gzexe(1), gzip(1), zdiff(1), zforce(1), zmore(1), znew(1)ZGREP(1)