UNIX for Advanced & Expert Users

Hi KingKong,

Now I dont have any idea why its not working for you and working fine for me. Can you run it with set -x enabled and paste the output here.

Regards,
Gaurav

Hey Gaurav!

The output is with set -x enabled:

+ max
cat: soln.sh: No such file or directory
+ max=0
+ cat file.txt
+ read LINE
++ echo 1001 34.5 68.7 67
++ awk '{print $2}'
+ fir=34.5
++ echo 1001 34.5 68.7 67
++ awk '{print $3}'
+ sec=68.7
+ '[' 34.5 -gt 0 ']'
./max: line 9: [: 34.5: integer expression expected
+ '[' 68.7 -gt 0 ']'
./max: line 12: [: 68.7: integer expression expected
+ read LINE
++ echo 1002 22.0 40.1 32
++ awk '{print $2}'
+ fir=22.0
++ echo 1002 22.0 40.1 32
++ awk '{print $3}'
+ sec=40.1
+ '[' 22.0 -gt 0 ']'
./max: line 9: [: 22.0: integer expression expected
+ '[' 40.1 -gt 0 ']'
./max: line 12: [: 40.1: integer expression expected
+ read LINE
++ echo 1003 11.3 34.8 45
++ awk '{print $2}'
+ fir=11.3
++ echo 1003 11.3 34.8 45
++ awk '{print $3}'
+ sec=34.8
+ '[' 11.3 -gt 0 ']'
./max: line 9: [: 11.3: integer expression expected
+ '[' 34.8 -gt 0 ']'
./max: line 12: [: 34.8: integer expression expected
+ read LINE
+ grep 0 file.txt
1001 34.5 68.7 67
1002 22.0 40.1 32
1003 11.3 34.8 45

Regards
Kingkong

Hi KingKong,

The reason is that the value of max variable is not getting changed. Even I don't know why.

Try with the following modified script and tell me what happened with this, even I am eager to know why this is happening.

I am sure that this will work,

Cheers,
Gaurav

Hey Gaurav,

This time the output is as follows:

+ max
+ max=0
+ cat file.txt
+ read LINE
++ echo 1001 34.5 68.7 67
++ awk '{print $2}'
+ fir=34.5
++ echo 1001 34.5 68.7 67
++ awk '{print $3}'
+ sec=68.7
+ '[' 34.5 -gt 0 ']'
./max: line 8: [: 34.5: integer expression expected
+ '[' 68.7 -gt 0 ']'
./max: line 11: [: 68.7: integer expression expected
+ read LINE
++ echo 1002 22.0 40.1 32
++ awk '{print $2}'
+ fir=22.0
++ echo 1002 22.0 40.1 32
++ awk '{print $3}'
+ sec=40.1
+ '[' 22.0 -gt 0 ']'
./max: line 8: [: 22.0: integer expression expected
+ '[' 40.1 -gt 0 ']'
./max: line 11: [: 40.1: integer expression expected
+ read LINE
++ echo 1003 11.3 34.8 45
++ awk '{print $2}'
+ fir=11.3
++ echo 1003 11.3 34.8 45
++ awk '{print $3}'
+ sec=34.8
+ '[' 11.3 -gt 0 ']'
./max: line 8: [: 11.3: integer expression expected
+ '[' 34.8 -gt 0 ']'
./max: line 11: [: 34.8: integer expression expected
+ read LINE
+ grep 0 file.txt
1001 34.5 68.7 67
1002 22.0 40.1 32
1003 11.3 34.8 45

Regards,
Kingkong

Hi Kingkong,

No idea now, lets wait for some guru to throw some light on it. Don't know why you are not able to set the value of max variable.
One quick question are you using the exact code I m pasting here or did you made some small change in it.
Hey all unix gurus help us out.

Gaurav

Hi Gaurav,

I pasted the exact code into a script named max.

Kingkong

Hi ,
May be this is the reason.
Change the name of your script.
And it will work out
max is the name of variable and some conflict may be there.
so change the name of script and run it

Gaurav