Merge Static and dynamic parts in variable declaration

 
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Homework and Emergencies Emergency UNIX and Linux Support Merge Static and dynamic parts in variable declaration
# 1  
Old 07-13-2010
Merge Static and dynamic parts in variable declaration

Dear Unix experts

Moved from "Shell Programming and Scripting "
I want to define a variable which contains dynmic and static part, daynamic part is the first field.

Sample of data

Code:
dddd aaaa sssss 12345
ssss 2323 234234 4242
dddd 3223 34234 54353
ssss 24234 3434 42342
dddd rwrw 423423 werwer

Code:
Code:
nawk 'BEGIN {FS=" "}{ $1"_subs"=$1"_subs"+1}END {print dddd_subs}'

it should give me 3

but it gives me error "nawk: syntax error at source line 1
context is
Code:
BEGIN {FS=" "}{ >>> $1"_"subs= <<< $1"_"subs+1}
nawk: illegal statement at source line 1"

Can you please help ?
Many thanks in advance

I also tried

Code:
Code:
nawk 'BEGIN {FS=" ";diff[$2]=2}{ subs[$1]=+1}END {print subs[dddd], diff [rwrw]}

, Also error...

Can any one advise how to do it in any of the ways above

Last edited by radoulov; 07-13-2010 at 10:14 AM.. Reason: Additional code tags!
# 2  
Old 07-13-2010
Could you elaborate more on how the expected output of 3 should be calculated?

---------- Post updated at 03:11 PM ---------- Previous update was at 02:16 PM ----------

Thread reopened because in the Emergency forum.

Last edited by radoulov; 07-14-2010 at 03:23 PM..
# 3  
Old 07-16-2010
Try this:

Code:
nawk 'BEGIN {FS=" "} {subs[$1]++} END {for (i in subs) print i, subs[i]}'

Your last version uses a field variable, $2, in a BEGIN statement.
This is not valid because when the BEGIN statement executes no
data has been read, therefore there is no $2 field variable.

Last edited by Franklin52; 07-16-2010 at 04:47 PM.. Reason: Please use code tags, thank you
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