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How to remove blank lines from a text file (in Unix)
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Question:
I need to remove all blank lines from a huge text file on a unix system. What's the easiest way to achieve this?Answer:
Use the command line text editor sed and issue the statement shown below.It will create a temporary file, afterwards replace the original file with it.
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# the following uses the editor sed to find blank lines
# and delete them:
# in the regex ^ means beginning of line,
# and $ means end of line
sed '/^$/d' myfile.txt >newfile.txt
mv newfile.txt myfile.txt | ||
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