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Gawk on Windows: Joining lines only if 1st field matches

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Special Forums Windows & DOS: Issues & Discussions Gawk on Windows: Joining lines only if 1st field matches
# 8  
Old 04-19-2012
try

Code:
awk -F: 'FNR==NR{a[$1]=$2;next}$2 in a{print $0 FS a[$2]}'

This User Gave Thanks to neutronscott For This Post:
M@LIK
# 9  
Old 04-20-2012
@neutronscott::
i dont know how it works but it does =D.. i guess i'll have to study it
thanks a bunch

---------- Post updated at 07:54 AM ---------- Previous update was at 06:07 AM ----------

@neutronscott::
would u mind explaining the last command briefly??
# 10  
Old 04-20-2012
Quote:
Originally Posted by M@LIK
im using gawk with windows.. maybe thats why??
That would have been nice to know, yes. I've spent a lot of time fighting with gawk in windows because if CMD's ridiculous quoting problems.
# 11  
Old 04-20-2012
Quote:
Originally Posted by Corona688
That would have been nice to know, yes. I've spent a lot of time fighting with gawk in windows because if CMD's ridiculous quoting problems.
LOL... im used to it..
i just wanted him to explain because i have a lot of similar cases.. and i dont like asking too much
# 12  
Old 04-20-2012
Hi,

i am learning awk and have started looking into one liners shown in this forum. i have doubt in this. i have just expanded this oneliner for my understanding and trying to execute it but it throws error. please help me

Code:
bash-3.00# cat nawktest
#!/usr/bin/nawk -f
BEGIN {FS=":"}
if (FNR==NR)
{
a[$1]=$2;
next;
}
for ($2 in a)
{
print $0 FS a[$2];
}



Code:
bash-3.00# ./nawktest test.txt test1.txt
/usr/bin/nawk: syntax error at source line 3
 context is
         >>> if <<<  (FNR==NR)
/usr/bin/nawk: bailing out at source line 3
bash-3.00#

# 13  
Old 04-20-2012
@chidori::
where did u get the "if" from?? there no any if in the one liner..
# 14  
Old 04-20-2012
@chidori: you need to put an extra opening brace before the if and a closing one at the end.
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