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retreiving and assigning values and manipulating string in a for loop

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Top Forums Shell Programming and Scripting retreiving and assigning values and manipulating string in a for loop
# 36  
Old 06-17-2009
Quote:
Originally Posted by panyam
Change the argument number accordingly (i.e replace $(NF-1) with $8.

I did not understand
Code:
moreover i donot want to put this values in file..would be in a variable which would be used in if else blocks.

what it mean ?...

If you post exactly your requirement , then you will get more responses.
If i Replace it with $8 then also it wont serve the purpose..
because. time field may contain 1 or 2 fields
example:
crmcint 16428 1 0 14:35:49 ? 0:00 proc_s de01.c (proc_s is 9th)
rscle 3481 1 0 Apr 13 ? 0:01 proc_s dt07.c (proc_s is 8th)

something like this may do... but it has syntax problems in the if construct.

Code:
psg ksh | awk 'BEGIN {n=split($0,arr," ")} {
      for (i=1;i<=NF;i++) {
      print "Filed " i " is " $i
      print length($i)
      if [ NF == 9]
        then 
               if[ length($4) == 3]
                then
                  cmd_name=$9
                fi
               else
                then
                  cmd_name=$8 
                fi
               pid=$1
               user=$2
        fi
 chomp($cmd_name);
 echo $cmd_name
  }
}'

# 37  
Old 06-17-2009
Code:
psg ksh | awk '{ printf("pid=%d uid=%s command=%s\n", $2, $1, ($5 ~ /^[A-Z]/)? $9:$8) }'

# 38  
Old 06-17-2009
Quote:
Originally Posted by vgersh99
Code:
psg ksh | awk '{ printf("pid=%d uid=%s command=%s\n", $2, $1, ($5 ~ /^[A-Z]/)? $9:$8) }'


hi...
can u explain what is $5 ~ /^[A-Z]/)? $9:$8) .. i cannot understand that.

one more thing can i modify this code like this

psg ksh | awk '{
pid=$2
uid=$1
command=($5 ~ /^[A-Z]/)? $9:$8) }'

thanks
# 39  
Old 06-17-2009
Quote:
Originally Posted by Anteus
hi...
can u explain what is $5 ~ /^[A-Z]/)? $9:$8) .. i cannot understand that.
If the fifth field starts with an upper case letter, return the value of the ninth field, otherwise return the value of the eight field.
Quote:
Originally Posted by Anteus
one more thing can i modify this code like this

psg ksh | awk '{
pid=$2
uid=$1
command=($5 ~ /^[A-Z]/)? $9:$8) }'

thanks
i don't see why not - would not hurt to try it.
# 40  
Old 06-17-2009
Quote:
Originally Posted by vgersh99
If the fifth field starts with an upper case letter, return the value of the ninth field, otherwise return the value of the eight field.

i don't see why not - would not hurt to try it.


Tried

but its showing error
awk: There is an extra ) character.
The source line is 4.
The error context is
command=($5 ~ /^[A-Z]/)? >>> $9:$8) <<<
syntax error The source line is 4.
awk: The statement cannot be correctly parsed.
The source line is 4.
awk: There is a missing } character.
awk: There is an extra ) character.
# 41  
Old 06-17-2009
Quote:
Originally Posted by Anteus
Tried

but its showing error
awk: There is an extra ) character.
The source line is 4.
The error context is
command=($5 ~ /^[A-Z]/)? >>> $9:$8) <<<
syntax error The source line is 4.
awk: The statement cannot be correctly parsed.
The source line is 4.
awk: There is a missing } character.
awk: There is an extra ) character.
then there must be an extra ')' from the copy/paste of the previous 'printf' posting. Tried to remove it?
What in the error message is not clear?
# 42  
Old 06-17-2009
Quote:
Originally Posted by vgersh99
then there must be an extra ')' from the copy/paste of the previous 'printf' posting. Tried to remove it?
What in the error message is not clear?
Code:
 psg telnetd | awk '{
                pid=$2
                uid=$1
                command=($5 ~ /^[A-Z]/)? $9:$8
                printf("pid=%d uid=%s command=%s\n",pid,uid,command)
                }'


ohh sorry! missed a bracket. thanks for helping.
regards.

-----Post Update-----

thank u all of u guys..
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