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Adding header and trailer into a file

 
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# 1  
Old 10-17-2011
Java Adding header and trailer into a file
Hi,

I want to add the below Header to all the files in sequence File1,File2,File3...etc

"ABC,<number of chracter in the file>"

e,g - If File1 is as below

pqrstuvdt
abcdefgh

then I want to add the above header into it ,So that File1 becomes as below

ABC,17
pqrstuvdt
abcdefgh

and I wanto do that for all the files in a directory .

Thanks in Advance
# 2  
Old 10-17-2011
Re: Adding header and trailer into a file
Code:
#!/bin/sh
 
for i in filelist*
do
   NUMCHAR=`cat $i | wc -c`
   echo "ABC,$NUMCHAR" >${i}.new
   cat $i >>${i}.new
done


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Last edited by vbe; 10-28-2011 at 10:10 AM..
This User Gave Thanks to chedlee88-1 For This Post:
spari2
# 3  
Old 10-17-2011
here's one way .....
Code:
for file in *.x; do 
      wc -c $file | awk '{printf("%ld,%s\n",$1,$2)}' > ${file}.temp && cat ${file} >> ${file}.temp && mv ${file}.temp ${file};
done

Last edited by vbe; 10-28-2011 at 10:10 AM..
This User Gave Thanks to munkeHoller For This Post:
spari2
# 4  
Old 10-17-2011
Quote:
Originally Posted by munkeHoller
here's one way .....

for file in *.x; do
wc -c $file | awk '{printf("%ld,%s\n",$1,$2)}' > ${file}.temp && cat ${file} >> ${file}.temp && mv ${file}.temp ${file};
done

Yeah. This will work.

However, why would you want to program it this way?
It looks really complicated.
# 5  
Old 10-17-2011
Quote:
Originally Posted by chedlee88-1
#!/bin/sh

for i in filelist*
do
NUMCHAR=`cat $i | wc -c`
echo "ABC,$NUMCHAR" >${i}.new
cat $i >>${i}.new
done
Not all of those cats are useless, but some are.
# 6  
Old 10-17-2011
I knocked this out off the top of my head, but, please, let me know why you think its complicated
(its reasonably robust, tidies as it goes, concise ), happy for it to be improved|replaced shared ....
# 7  
Old 10-18-2011
Is this complicated for you or not?
Code:
for file in file*
do
  sed -i "1 s/^/`wc -l $file`\n/" $file
done

This User Gave Thanks to rdcwayx For This Post:
spari2
 
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