Shell Programming and Scripting

logfileyearmonth=`echo $logfile | awk -F_'{print $NF}'`

logfileyearmonth=$(awk -F_ '{print $(NF-1)}' $logfile)

]+ + awk -F_ {print $(NF-1)} acs_log_purge_20110517_234239 
awk: input file "acs_log_purge_20110517_234239": The system cannot find the file specified.

logfileyearmonth=`echo $logfile | awk -F_ '{print $(NF-1)}'`

# Test, create some files:
echo "abc_cd_20110302_123423
abc_cd_ef_20110301_123423
abc_cd_ef_20110403_123423
abc_ef_20110401_123423" | xargs touch

$ ls * | awk -F_ '{print $(NF-1)}'
20110302
20110301
20110403
20110401

cd Log_dir
 
for f in *.log
do
  let  cnt="cnt + 1"
  logfilename=$f
  Log "Log file Name $logfilename"
  logfile=`basename $logfilename .log`
  Log "logfile without extension $logfile"
  logfiledate=$`awk -F_ '{print $(NF-1)}' $logfile`
  Log "logfiledate $logfiledate"
done
Log "Total file count $cnt"

...
logfiledate=$(echo $logfile | awk -F_ '{print $(NF-1)}')
...

cd Log_dir
 
for f in *.log
do
  let  cnt="cnt + 1"
  logfilename=$f
  Log "Log file Name $logfilename"
  logfile=${logfilename%.*}
  Log "logfile without extension $logfile"
  logfiledate=$(echo $logfile | awk -F_ '{print $(NF-1)}')
  Log "logfiledate $logfiledate"
done
Log "Total file count $cnt"