inserting and replacing lines with awk

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# 8  
Old 06-12-2011
Yes it is correct : my code currently ignore textb.
I am not sure to understand your needs so i just gave an attempt based on the given example.
Feel free to adapt it.

---------- Post updated at 12:41 AM ---------- Previous update was at 12:11 AM ----------

BEGIN{i=1}initialize the index that will later be used to scan file1
NR==FNR{p[NR]=$1;a[NR]=$0;next}from the first file, build 2 "line number indexed" array one holding $1 and one holding the entire line
/^texta/{x=$2}while scanning the second file, if texta is found, keep $2 value in variable x
x&&/^textins/{sub(".*"$3,$3);y=$0}!y{next}if x is set find the next textins line and erase everything before $3 and save the line in y variable
{do {still while scanning the second file, we start scanning the arrays holding file1 that have previously been build
if(p[i]!=x){while $1 from file 1 is different from the currently retainded scanned value of file2
print a[i]just print the line of file1
}else{ otherwise , substitution (as per what i have understood of your requirments)
split(a[i],b)the initial line is split in an array b so field can be extracted easier
print p[i]" \t "y"\t"b[4]" \t "b[5]print the desired field inserting those extracted from file2
x=y=z;delete b;i++;nextreset x and y to empty, delete array b increment i to start next scan of file1 at the next line than the one that have been processed, and reprocess from beginning to populate x and y again with next value from file 2
} delete a[i];i++delete the printed line from the array an prepare to scan next line
}while(length(a[i])) Loop for scanning file1 while line not empty
}END{do{print a[i];i++}while(length(a[i]))} since the scan of file 1 only start when x and y have been populated from file2, when the last substitiution has been made (when scanning file2 is finished) it requires an extra loop to finish the display the rest of file1

Last edited by ctsgnb; 06-12-2011 at 08:19 PM..
# 9  
Old 06-13-2011
Hi ctsgnb,

thanks a lot for your effort!
But at which point can I insert the condition that the next line has to start with textb? Sorry for that question, but your code seems so complex to me that I don't know how to adapt it.
Does it work with something like:
{do {
                print a[i]
                print p[i]" \t "y"\t"b[4]" \t "b[5]
                x=y=z;delete b;i++;next
        delete a[i];i++
}END{do{print a[i];i++;flag=0}while(length(a[i]))}

Thanks a lot for you patience!


Last edited by tempestas; 06-13-2011 at 06:29 AM..
# 10  
Old 06-13-2011
i have to do the below tasl using script.

please help

Disable the "EXPN" and "VRFY" commands in your current version of the "sendmail" command. A
malicious user able to connect to a machine running sendmail may be able to acquire information
about user accounts on that system
# 11  
Old 06-13-2011
Hi ctsgnb,

I just tried your code on the entire input file: it doesn't work. For some reason it only works if I use the short example lines that you used. As soon as I add some more lines in the input and the insert files the the output file equals the input file. Nothing is replaced or added. How is that possible?


# 12  
Old 06-13-2011
Could you please :

1) post a short example (initial input, replacement file, and expected output) that demonstrate when and how should textb considered.

2) upload your big files, input and replacement files.

# 13  
Old 06-15-2011
give a try to this :

# cat ext.awk
if (!v&&!r) { if ($4==1) {r++;R[0]=$5} }
else {if ($4==2||$4==3) {K[(v":"r)]=$4;R[(v":"r)]=$5;r++}}
$1~/Document/{ Et[++e]=$7-R[0];next}
y=(y?y OFS:z) (K[x]?K[x]:0) OFS (R[x]?R[x]-St[k]:0)
} while ((k":"(++t)) in K)
print S[k],V[k],St[k]-R[0],Et[k],y;y=z} while (k++<v)

and then run

awk -f ext.awk OFS="\t\t" OrigFile.log

or chose any OFS (Output Field Separator) that fit with your expectations instead of the double tabulation proposed aboved.

Last edited by ctsgnb; 06-17-2011 at 10:27 AM..
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