topic Shell Script - For and IF issue in Operating System - HP-UX

Shell Script - For and IF issue

Fefers — Thu, 12 Jul 2012 21:57:26 GMT

Hello experts..

I'm trying to copy a file the same way that it is, but when it find a NULL character, must input another value.

eg (what I need).

File1.txt

File2.txt

100

Whats going on

Scipt:

for i in File1.txt ;
do
if [ `cat File1.txt` == "" ]
then
echo "100" >> File2.txt
else
cat File1.txt >> File2.txt
fi
done

# cat File1.txt
80

# sh -x test.ksh

+ cat File1.txt
+ [ 80 80 80 == ]
test.ksh[5]: 80: 0403-012 A test command parameter is not valid.
+ cat File1.txt
+ 1>> File2.txt

#cat File2.txt
80

Could some help me please?

Dennis Handly — Fri, 13 Jul 2012 03:43:46 GMT

If you want to read File1.txt and copy all but empty lines to File2.txt, then you need to use a while vs for loop:

while read line; do

   if [ "$line" = "" ]; then # Note only one "="
      echo "100"
   else
echo "$line"

fi
done < File1.txt > File2.txt

Steven Schweda — Fri, 13 Jul 2012 03:10:16 GMT

Fefers — Fri, 13 Jul 2012 14:31:25 GMT

Thanks Dennis and Steven!!

it worked!!

Dennis Handly — Fri, 13 Jul 2012 23:10:32 GMT

>Thanks Dennis and Steven!!

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