Help with csh, read in a file line by line


 
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# 1  
Old 03-20-2010
Bug Help with csh, read in a file line by line

I want to process some audio with:
sox $audio1 $audio2 trim $start_time $dur

How can I batch process them by read in a file containing the values for the variables above on every line, like:
1.wav 1.5 1
2.wav 2.5 2
...

I tried "foreach f (`cat file`)" but cannot read in line by line, and I just found that these is no env variable IFS for csh. Should I use bash script?

Thank you very much
# 2  
Old 03-20-2010
Code:
 
while read line 
do 
 echo $line 
done < file

The above code for getting the content line by line.
# 3  
Old 03-21-2010
Quote:
Originally Posted by dustinwang2003
I want to process some audio with:
sox $audio1 $audio2 trim $start_time $dur

How can I batch process them by read in a file containing the values for the variables above on every line, like:
1.wav 1.5 1
2.wav 2.5 2
...

I tried "foreach f (`cat file`)" but cannot read in line by line, and I just found that these is no env variable IFS for csh.
Top Ten Reasons not to use the C shell Csh problems Csh Programming Considered Harmful
Quote:
Should I use bash script?

Yes (or any POSIX shell).

Code:
while read audio2 start_time dur  ## adjust variable names as necessary
do
  sox $audio1 $audio2 trim $start_time $dur
done < "$file"

This User Gave Thanks to cfajohnson For This Post:
# 4  
Old 03-22-2010
Thank you very much.
It solves the problem.
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