i want to combine two awk scripts which is having same loop and filelist

LAKSHMI NARAYAN · #1 (**permalink**) 06-17-2007

hi,
to all
give me some idea below scripts

file=`cat filelist`
for filename in $file
do
awk '{
if ($0 ~ /system/ && flag == 0) {
flag=1;
print $0;
}
else if ($0 ~ /system/ && flag == 1) {
printf("%s SYSLAY %s %s %s\n",$1,$3, $4, $5);
}
else
print $0;
}' $filename > temp.txt
mv temp.txt $filename
done

for this script1 : i have to add a new line which contain syslay for the filelist containing system. and that system occurs two times so after the second occurence i have to add new line . i have done like this if there is any other solution of this please send the solution.

files=`cat filelist`
for filename in $files
do
awk '{
if ( $0 ~ /narayana / && flag == 0 ) {
flag=1
print $0;
}
else if ( $0 ~ /narayana/ && flag == 1 ) {
printf("%s %s /narayana/mde\n",$1,$2);
}
else
print $0;
}' $filename > temp.txt
mv temp.txt $filename.tmp
done

script2: i have to add '/mde' for narayana as narayana/mde for the files in the filelist . And for this also for the second occurence of the line containing narayana only should be changed .

i have to merge these two scripts as one so kindly help in this matter urgently

example;

this is not a typical example
narayana
solution is not verified
this section is to be changed
narayana
sos ana s plaea

the above is example of the file
and it should be modiefied as

this is not a typical example
narayana/mde
solution is not verified
this section is to be changed
narayana/mde
sos ana s plaea

with regards
narayana

aigles · #2 (**permalink**) 06-17-2007

You can do something like that :

Code:

file=`cat filelist`
for filename in $file
do
   awk '
      /system/ {
         if (flag_system) {
            printf("%s SYSLAY %s %s %s\n",$1,$3, $4, $5);
            next;
         }
         flag_system = 1;
      }
      /narayana/ {
         if (flag_narayana) {
            printf("%s %s /narayana/mde\n",$1,$2);
            next;
         }
         flag_narayana = 1;
      }
      { print $0 }
   ' $filename > temp.txt
   mv temp.txt $filename
done

LAKSHMI NARAYAN · #3 (**permalink**) 06-17-2007

i am very much thankful to you
i have run that script and that was working.
and i have lot of doubts regarding using flags
if time availabe can u explain in detail of the script

thanks

regards

LAKSHMI NARAYAN · #4 (**permalink**) 06-17-2007

hi

how to modify for the third or fourth occurence of the pattern

aigles · #5 (**permalink**) 06-17-2007

The following version of the script modifies lines :

First and following occurences of 'system.
Third and following occurences of 'narayana'

Code:

file=`cat filelist`
for filename in $file
do
   awk '
      BEGIN {
         system_occ   = 1;
         narayana_occ = 3;
      }
      /system/ {
         ++flag_system;
         if (flag_system >= system_occ) {
            printf("%s SYSLAY %s %s %s\n",$1,$3, $4, $5);
            next;
         }
      }
      /narayana/ {
         ++flag_narayana;
         if (flag_narayana >= narayana_occ) {
            printf("%s %s /narayana/mde\n",$1,$2);
            next;
         }
      }
      1
   ' $filename > temp.txt
   mv temp.txt $filename
done

LAKSHMI NARAYAN · #6 (**permalink**) 06-19-2007

for the above script which u have given the solution for the solution i have to add another script also

for the below file i have remove a comment after the line narayana

this is not a typical example
#narayana
#solution is not verified
#this section is to be changed
#narayanae
sos ana s plaea

this is not a typical example
narayana
solution is not verified
this section is to be changed
narayana
sos ana s plaea

please kindly give the solution

with regards
narayana

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