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Shell Programming and Scripting

awk sub() issue in Unix

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# 8  
Old 07-11-2012
make sure, your last line in the file is not empty
# 9  
Old 07-11-2012
It can be further improved like this:
Code:
for i in pic.*.txt

instead of for i in `ls -1 pic.*.txt`. That is UUOBM1L (useless use of back ticks, minus 1 and ls Smilie)
# 10  
Old 07-11-2012
yes, i am sure that the txt file is not empty in the last line.
My expected output is
July 10 2012 is valid.

but the actual output is that " is invalid"
# 11  
Old 07-11-2012
can you post your script

after the calculation, just print it and see, what it comes

Code:
 
corr_date=$(  awk 'END { print $1, $2, $3; }' $i )
echo $corr_date

# 12  
Old 07-11-2012
Try temporarily using
Code:
#!/bin/ksh -x

on line 1 to see what is going on..
# 13  
Old 07-11-2012
My Script:
Code:
#!/bin/ksh -x

curr_date=`date +"%B %d %Y"`

for i in pic.*.txt
  do
     corr_date=$(  awk 'END { print $1, $2, $3; }' $i )
     if [ "$corr_date" = "$curr_date" ]; then
                echo "$corr_date is valid."
     else
                echo "$corr_date is invalid"
     fi
  done

+ ./pack.ksh
+ + date +%B %d %Y
curr_date=July 11 2012
+ + awk END { print $1, $2, $3; } pic.01.txt
corr_date=
+ [ = July 11 2012 ]
+ echo is invalid
is invalid
# 14  
Old 07-11-2012
check the last line in this file -- pic.01.txt
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