Executing a script and argument within awk

[ranjit]

[tt]
Is it possible to run a script within awk presenting a parsed argument to it?
My work around at present is to print the syntax and any arguments to a file and execute the file outside of the awk statement.
Can the following line be run inside an awk statement:
/opt/itmcmd server -h /opt/ITM start ARG


###Script extract

/opt/IBM/ITM/bin/cinfo -r|nawk -v ARG=$VAL 'BEGIN {
RUNSCRIPT="/tmp/runscript"
FLAG=1 }

$0 ~/running$/{ FLAG=0 }

END { if(FLAG==1) {
printf("%s%s%s\n", "/opt/itmcmd server -h /opt/ITM start"," ",ARG) >RUNSCRIPT }
}'


# Work around solution
/tmp/runscript >/dev/null 2>&1
[/tt]

 

[feherke]

Hi

To run an external command form [tt]awk[/tt] use the [tt]system()[/tt] function.

Or if you have [tt]gawk[/tt], you can run a command by piping its input and/or output from/to the [tt]awk[/tt] script.

At least, if I understand correctly what you want.

Feherke.

http://rootshell.be/~feherke/

 

[ranjit]

Thanks for the reply. I'm aware of the system command, as in
system("/tmp/myscript")

However the system command doesn't appear to accept the argument presented to the script (via the -v option) I wish to run.

script syntax...

myscript [arg1]

 

[feherke]

Hi

What is your problem with the parameter ? Give it.

echo -e "-m\n-s\n-p" | awk '{ system("uname " $0) }'

Feherke.

http://rootshell.be/~feherke/

 

[PHV]

A starting point:
system("/opt/itmcmd server -h /opt/ITM start " ARG)

Hope This Helps, PH.
Want to get great answers to your Tek-Tips questions? Have a look at FAQ219-2884 or FAQ181-2886

 

[ranjit]

Many thanks PHV - it's now resolved.

My mistake when using system was to also enclose the ARG in quotes.