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Replacing extension of files

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# 1  
Old 02-05-2014
Replacing extension of files
hi,

i am having a certain files in a folder where i need to replace the extension with similar file name

for eg
Code:
1.csv
2.csv
3.csv
4.csv

i need to replace the extension
Code:
1.csv
1.txt
2.csv
2.txt
3.csv
3.txt
4.csv
4.txt

the text file will be 0 byte file but csv file will have data in each files
Code:
for i in *.csv
do
touch $i
done

# 2  
Old 02-05-2014
Use cp instead of touch with parameter substitution:
Code:
for i in *.csv
do
        cp "$i" "${i/\.csv/\.txt}"
done

This User Gave Thanks to Yoda For This Post:
rohit_shinez
# 3  
Old 02-05-2014
I think it must be simply . not \.
To produce 0 length files:
Code:
for i in *.csv
do
  touch "${i/.csv/.txt}"
done

Or
Code:
for i in *.csv
do
  touch "${i%.*}.txt"
done

Old Unix shells need an external program basename
Code:
for i in *.csv
do
  touch `basename "$i" .csv`.txt
done

This User Gave Thanks to MadeInGermany For This Post:
rohit_shinez
# 4  
Old 02-05-2014
basename internally is "${path##*/}" for bash and ksh.
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