You can use commands like sed, awk, or grep to delete all empty lines from a file in Linux.
Example:
Create a file with multiple empty lines:
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## Create a file with multiple empty lines cat << EOF > myfile Hello everyone Welcome to CloudAffaire This is Debjeet! EOF |
Using sed:
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## replace the content sed -i '/^[[:space:]]*$/d' myfile #or sed -i '/^\s*$/d' myfile #or sed -i '/^$/d' myfile # without changing the content sed -n '/^\s*$/!p' myfile |
Using awk:
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# without changing the content awk /./ myfile #or awk 'NF' myfile #or awk 'length' myfile #or awk '/^[ \t]*$/ {next;} {print}' myfile #or awk '!/^[ \t]*$/' myfile |
Using grep:
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# without changing the content grep . myfile grep -v '^$' myfile grep -v '^\s*$' myfile grep -v '^[[:space:]]*$' myfile |
Check the content of the file:
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## Get the content of the file cat myfile |