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Shell Programming and Scripting

Read and write in the file

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# 8  
Old 12-11-2012
Check this out..

Code:
$ cat file
rel/prod/amp.cfg1
rel/fld/amp.cfg0
rel/fld/amp.cfg/sdd1
rel/fld/amp.cfg/doc/cam/amp.cfg0

Code:
$ awk '{if(substr($0,length($0),1) == 0){sub("0$","1");print > "new_file"}}' file

Code:
$ cat new_file
rel/fld/amp.cfg1
rel/fld/amp.cfg/doc/cam/amp.cfg1

# 9  
Old 12-11-2012
Really Sorry, The original case is-

A file containing three field f1-f2-f3
These fields are separated by '-'
Code:
while IFS='-' read -r f1 f2 f3 
do 
   if [ $f3 != '0' ]   
   then
     EXECUTE SOME FUNCTION
   fi
 #After Processing It should change f3 to 1
done < ${DATE_FILE}



Example Suppose the file is
Code:
1-Process-0
2-Task-1
3-Server-0

So when I execute the scripts it should do as
Code:
1-Process-1
2-Task-1
3-Server-1

Moderator's Comments:
Mod Comment Video tutorial on how to use code tags in The UNIX and Linux Forums.
Last edited by Franklin52; 12-11-2012 at 12:07 PM.. Reason: Code tags
# 10  
Old 12-11-2012
Quote:
Originally Posted by pamu
As per OP's condition you should use..Smilie

Code:
sed -i '/1$/d;s/0$/1/' file

That would violate their coding standard of never using a temp file, because -i uses a temp file. It's not magic.

That said, 'never use a temp file' is a pretty arbitrary and pointless coding standard for UNIX shell scripting.
# 11  
Old 12-12-2012
Any Idea Guys.. I tried lot..
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