executable script

[codemut]

Challenge: to convert what works on the command line into an executable script, putting each string within a file into an array, the file delimeter being empty space of any length.

This works on the command line:

gawk '/searchstring/ {split($0, arr, " "); for (i = 1; i <= NF; i++) { if (arr == "string") {print arr[i+1]}}}' file

This below doesn't work as the executable:

#!/usr/bin/gawk -f

BEGIN {
while ( getline < "file" ) {
split($0, arr, " ")
}
}

for (i = 1; i <= NF; i++) {
if (arr == "string") {
print arr[i+1]
}
}

}

Perhaps it needs to accommodate multidim arrays in the executable... but I'd like to keep it simple.

 

[PHV]

#!/usr/bin/gawk -f
BEGIN {
while(getline < "file"){
n=split($0,arr," ")
for(i=1;i<=n;++i)
if(arr=="string")
print arr[i+1]
}
}

Hope This Helps, PH.
FAQ219-2884
FAQ181-2886

 

[codemut]

PHV,

Your solutions are right on! So, can you recommend a favorite awk book? I have Effective Awk by Robbins. It would be nice to find more for accommodating user defined function libraries... maybe for a coming version of gawk?

 

[Annihilannic]

I find the online gawk manual to be an excellent reference, with lots of examples.

Annihilannic.