Shell Programming and Scripting

To be more preciser, the above statements echo the return code on the screen. The way to get the return code with the above statements in your script is:

Code:

retval=`awk -f input_check.awk strings.txt`

To return an exit code you can use the exit statement of awk:

Code:

exit(ReturnCode)

The return code can then be retrieved with:

Code:

retval=`echo $?`

GNU nano 2.0.6 File: union.sh

#!/bin/sh
error=`awk -f input_check.awk strings.txt`
if [ "$error" = "ok" ]
then
awk -f messview.awk messages
awk -f report_maker.awk warn.txt
i=1;
new="yes"
for file in `ls`
do
file_check="part"$i;
if [ "$file" = "$file_check" ]
then
if [ "$new" = "yes" ]
then
cat $file_check > "reporta.txt" GNU nano 2.0.6 File: union.sh

#!/bin/sh
error=`awk -f input_check.awk strings.txt`
if [ "$error" = "ok" ]
then
awk -f messview.awk messages
awk -f report_maker.awk warn.txt
i=1;
new="yes"
for file in `ls`
do
file_check="part"$i;
if [ "$file" = "$file_check" ]
then
if [ "$new" = "yes" ]
then
cat $file_check > "reporta.txt"
new="no"
else
cat $file_check >> "reporta.txt"
fi
rm $file_check
(( i = i+1 ))
fi
done
fi


new="no"
else
cat $file_check >> "reporta.txt"
fi
rm $file_check
(( i = i+1 ))
fi
done
fi
======================

I have this script now and the problem that if i want that the variable will get the value i need to do the command echo $error and then it prints the value of error too which i do not want to happen.
How can i avoid printing its value?

Don't confuse with the last replay ,i posted the script twice ,start reading from the second "#!/bin/sh"

In the case of the awk exit mode it allways returns 0 ,how can i make the script return a value like i want?

As Franklin52 mentioned,

Code:

exit somenumber  (in your awk script)
ret=`echo $?`

( in the shell script)

Can you paste your awk script also?


cheers,
Devaraj Takhellambam

BEGIN{ error="false";line=1;
}
{
check_count=split($0,count," ");
if (check_count<=3)
{
printf("Not enough sub strings in line %d should have method ,figures of row and count syntax and at least on$
error="true";
}
if ($1!="row"&&$1!="all")
{
printf("Bad name of words appearance metrhod on line %d, should be "all" or "row"\n",line);
error="true";
}
digits[1] = 0;
digits[2] = 0;
len[1] = split( $2, arr1 ,"" )
len[2] = split( $3, arr2 ,"" )
for ( i = 1; i <= len[1]; i++ )
if (( arr1[i] + 0 ) == arr1[i] )
digits[1]++
for ( i = 1; i <= len[2]; i++ )
if (( arr2[i] + 0 ) == arr2[i] )
digits[2]++
for (i=1;i<=2;i++)
{
if (i==1)
str="row";
else
str="all";
if ( len[i] != digits[i]||digits[i]<0 )
{
printf("Invaild value for the %s field on line %d should be numeric and equal or great from 0\n",str,line);
error="true";
}
}
}
END {exit(error);
}

Don't use a literal "true" or "false" as a return value but a 0 for true and another number for false.