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ls -ltr malfunctioning inside the k-shell script

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# 1  
Old 05-29-2009
ls -ltr malfunctioning inside the k-shell script
i have a script that shows the "yesterday" and "todays" date entry in the few log files. IF the mentioned date entry is not found in the logs then it sends an mails. These are all persistance applications.

Code:
#!/bin/ksh


TZ=`date +%Z`+0 ;d=`date +%Y-%m-%d`
TZ=`date +%Z`+24 ; b=`date +%Y-%m-%d`
echo "Checking for date $b   $d"

cd /ednpdtu3/u01/pipe/logs

for i in MeterResetReport.log DBMaint.log 
do
count=0
count1=0
count=`cat $i* | grep "$b" | wc -l`
count1=`cat $i* | grep "$d" | wc -l`
V_VAR=`ls -ltr $i | sed "s/\.log//" | awk '{print $9}'`
if [ $count -eq 0 ] && [ $count1 -eq 0 ]
then
echo "$V_VAR has NO entry "
else
echo "$V_VAR has entry "
ls -ltr $i
fi

done

The problem i m facing is that when i m giving the command ls -ltr $i in the script it showing the wrong modification time for few apps.Below the ERROR


ERROR:
Code:
MeterResetReport has entry 
-rw-r--r--   1 pipe     pipe        2518799 May 27 23:41 MeterResetReport.log
DBMaint has entry 
-rw-r--r--   1 pipe     pipe        9383516 May 28 10:04 DBMaint.log

Actual ls -ltr when i type in command prompt shows different result which is correct
Code:
ls -ltr DBMaint.log
-rw-r--r--   1 pipe     pipe        9425244 May 29 05:06 DBMaint.log

ls -ltr MeterResetReport.log
-rw-r--r--   1 pipe     pipe        2518799 May 28 18:41 MeterResetReport.log

# 2  
Old 05-29-2009
I don't believe that it's possible for ls -ltr to produce a different output in the script from the command line for the same files, so I think you should check again!
# 3  
Old 05-29-2009
You are changing $TZ at the start of the script which affects the display from "ls".

For example:

Code:
TZ=GMT0BST
ls -lad abc29
-rw-r--r--   1 root       sys              0 May 29 12:59 abc29

TZ=GMT6BST
ls -lad abc29
-rw-r--r--   1 root       sys              0 May 29 06:59 abc29


What is in your system's /etc/TIMEZONE ? If you don't have that file, what is TZ set to normally?

The following technique only temporarily changes TZ and will not affect commands later in the script. For timezones other than UK the offset to get yesterday or tomorrow is relative to your normal offset. Notice that I also state the daylight saving time to match my /etc/TIMEZONE .

Code:
echo "Yesterday : $(TZ=GMT24BST;date)"
echo "Today     : $(date)"
echo "Tomorrow  : $(TZ=GMT-24BST;date)"

Last edited by methyl; 05-29-2009 at 09:36 AM.. Reason: Added example technique
# 4  
Old 05-29-2009
var="MeterResetReport.log DBMaint.log"

for i in $var

may be this would help

Thanks,
Yagami
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