redirect

[ovince]

Hi,

I would like to do the same thing to many files and to put result into files that that has the same name as input files but with different suffixes. For example if I have datafiles like

boxHUN.dat
boxDNK.dat
boxCHY.dat

the result should be writen into

boxHUN.txt
boxDNK.txt
boxCHY.txt

I started like:

ls box*.dat | xargs awk 'BEGIN {FS=","}{print $2, $3/2}' > xargs".txt"

Of course, this does not work (I thought it would). How to redirect data properly?

thanks
oliver

 

[hopwon]

How about
for file in `ls box*.dat`
do
xargs awk 'BEGIN{FS=","}{print $2, $3/2}' > $file.txt
done

 

[ovince]

well I get error message like:

bash: $file.txt: ambiguous redirect

by using:

for file in `ls box*.dat`
do
xargs awk 'BEGIN{FS=","}{print $2, $3/2}' > $file.txt
done

Beside, If the input file is 'boxHUN.dat' then $file.txt writes out 'boxHUN.dat.txt' doesn't it?

 

[p5wizard]

Try this:

for file in `ls box*.dat`
do
ofile="$(basename $file .dat).txt"
awk '...' $file >$ofile
done

You have to substitute your awk program for the '...'

Note xargs is of no use here, because the for loop is processing the files one by one anyway.


HTH,

p5wizard

 

[ovince]

yes, this works nice....thanks