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Shell Programming and Scripting

Removing whitespace from files

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# 8  
Old 06-10-2003
vi yourfile
:%s/ /\%/g

does the job perfectly!
# 9  
Old 06-10-2003
Better for removing blank lines
Quote:
Originally posted by Kelam_Magnus
[B]My personal fav for removing blank lines...not your question... but I thought it still might be relevant.
Code:
grep -v ^$ file.in > file.out

^ designates the beginning of the line.
$ designates the end of the line.
But this only removes empty lines, not lines filled with spaces and tabs. Better:
Code:
awk 'NF > 0' file.in > file.out

# 10  
Old 06-10-2003
thanks for restating my post.... IF you will re-read the first line of my post, you will notice I did say that this portion only removes blank lines..

My second example is for removing blanks in a data file. Assuming that there is no blank lines at the end of the line. You can expand this to work with data files that have upto 9 fields...


Just trying to show that there are different examples that work depending on your file... even though some are more encompassing than others...
# 11  
Old 06-10-2003
And another version by perl:
Code:
perl -pe "s/ /%/g" < initial.file > output.file
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