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Replace white spaces of multiple files at once

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# 1  
Old 11-12-2012
Replace white spaces of multiple files at once
How to rename multiple files by replacing the white spaces with underscore

for ex:

Code:
293TrexFH\ \ \ GSM855007RINGB_lhb11_binary.txt
293TrexFH\ \ \ GSM855007RINGB_lhb12_binary.txt
293TrexFH\ \ \ GSM855007RINGB_lhb13_binary.txt


Code:
293TrexFH_GSM855007RINGB_lhb11_binary.txt
293TrexFH_GSM855007RINGB_lhb12_binary.txt
293TrexFH_GSM855007RINGB_lhb13_binary.txt


thanx in advance
# 2  
Old 11-12-2012
Code:
cat input_file | tr -s ' ' '_' > output_file

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