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Test file format

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# 1  
Old 04-15-2008
Test file format
Can any one tell me how to test file is in dos format or Unix format?
# 2  
Old 04-15-2008
You could use the 'od' command and grep the file for carriage returns ('\r') that usually exist in DOS files:

od -c file.txt | grep '\\r'

If it comes back with nothing then its most likely in Unix format.

Hope this helps.
# 3  
Old 04-15-2008
grep -c '^M$' filename
grep -c '^M$' filename

if it zero then it is in unix format.

It is working. Correct me if any exceptional case if it fails.

Note that ^M has to be typed with control-v and enter.(Not by typing shift 6 and M).
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