commandline result

[TheDash]

Hi,

The following command works at command line but not from a script. Any reason? When I copy paste the same command displayed at runtime on screen (using set -x) , it produces result. However, it doesn't give result from the script.

`egrep ''"'($keyword1"'|'"$keyword2)'"'' /var/adm/syslog/syslog.log`

Thanks.

 

[PHV]

In the script keyword1 and keyword2 have same values than at command prompt ?
The script is interpreted by the same shell as the interactive one ?
Are you sure you need all this single quotes ?

Hope This Helps, PH.
Want to get great answers to your Tek-Tips questions? Have a look at FAQ219-2884 or FAQ222-2244

 

[TheDash]

They have same values.

Example:
egrep '(Jul 31|Aug 1)' /var/adm/syslog/syslog.log


This is the output:

+ egrep '(Aug 1|Aug  2)' /var/adm/syslog/syslog.log
+ 1>> testfile
prompt:/home/user1>cat testfile
prompt:/home/user1>

But when I copy paste egrep '(Aug 1|Aug 2)' /var/adm/syslog/syslog.log >> testfile

it works fine.

I am trying to put the shell variables in awk (keyword1 & keyword2) so, I had to use the quotes. Any ideas?

 

[PHV]

I am trying to put the shell variables in awk
Feel free to post the shell script and/or the awk program.

Hope This Helps, PH.
Want to get great answers to your Tek-Tips questions? Have a look at FAQ219-2884 or FAQ222-2244

 

[TheDash]

Hi,

The code and results are shown below. As shown, the script doesn't produce any result but when copy pasted the same command gives result

testkw.sh

#!/usr/bin/sh
. /home/user1/datecalculations.sh
set -x
DAY="`date '+%d'`"
MON="`date '+%m'`"
YEAR="`date '+%Y'`"
yesterday=`calculate_date $DAY $MON $YEAR syslog`
today=`date | cut -c5-10`
egrep ''"'($yesterday"'|'"$today)'"'' /var/adm/syslog/syslog.log >> testfile

Results:

prompt:/home/user1>sh testkw.sh
+ + date +%d
DAY=02
+ + date +%m
MON=08
+ + date +%Y
YEAR=2004
+ + calculate_date 02 08 2004 syslog
yesterday=Aug 1
+ + cut -c5-10
+ date
today=Aug  2
+ egrep '(Aug 1|Aug  2)' /var/adm/syslog/syslog.log
+ 1>> testfile
prompt:/home/user1>cat testfile
prompt:/home/user1>egrep '(Aug 1|Aug  2)' /var/adm/syslog/syslog.log >> testfile
prompt:/home/user1>cat testfile | wc
3258 43862 340764
prompt:/home/user1>

 

[PHV]

And what about simply this in the shell script ?
egrep "($yesterday|$today)" /var/adm/syslog/syslog.log >> testfile

Hope This Helps, PH.
Want to get great answers to your Tek-Tips questions? Have a look at FAQ219-2884 or FAQ222-2244

 

[TheDash]

It works.

>cp /dev/null testfile
>sh testkw.sh
>cat testfile | wc
3258 43862 340764

Any reason why? Thanks a lot.

 

[PHV]

Any reason why?

Are you sure you need all this single quotes ?

Hope This Helps, PH.
Want to get great answers to your Tek-Tips questions? Have a look at FAQ219-2884 or FAQ222-2244