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Pass awk field to a command line executed within awk


 
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# 1  
Old 10-15-2013
Pass awk field to a command line executed within awk

Hi,

I am trying to pass awk field to a command line executed within awk (need to convert a timestamp into formatted date).
All my attempts failed this far.

Here's an example.
It works fine with timestamp hard-codded into the command
Code:
echo "1381653229 something" |awk 'BEGIN{cmd="date -d @1381653229 +\"%m/%e/%y %H:%M\""; cmd|getline; close(cmd); date=$0;}{print date"|"$2}'

How do I do something like
Code:
echo "1381653229 something" |awk 'BEGIN{cmd="date -d @$1 +\"%m/%e/%y %H:%M\""; cmd|getline; close(cmd); date=$0;}{print date"|"$2}'

Thanks in advance.
# 2  
Old 10-15-2013
You could do this, without troubling awk:

Code:
[user@host ~]$ set 1381653229 something
[user@host ~]$ echo "$(date -d @$1 +"%m/%e/%y %H:%M")|$2"
10/13/13 14:03|something
[user@host ~]$

# 3  
Old 10-15-2013
Well, that was just an example.
Actually I need to run with a script on multiple files and fish designated fields out of them.
So, awk seems to be the tool.
# 4  
Old 10-15-2013
Code:
$echo "1381653229 something" | while read a b;do echo $(date -d@$a +'%D %T')"|$b" ;done
10/13/13 10:33:49|something
$

# 5  
Old 10-15-2013
balajesuri, ctsgnb

Thank you both.
After all did it your way.

Smilie

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