How to display the output of a file without the blank lines

[font=Verdana]There are many ways to achieve this and they should work on all unixes:[/font]

[font=Verdana]With grep:[/font]

gz@shell~$ grep -v '^[[:space:]]*$'

gz@shell~$ grep -v ‘^$’ file

gz@shell~$ grep ‘.’ file

[font=Verdana]With awk:[/font]

gz@shell~$ awk '{ if (length($0) > 0){ print $0 }}'

gz@shell~$ awk NF file

gz@shell~$ awk ‘/./’ file

[font=Verdana]With sed:[/font]

gz@shell~$ sed ‘/^$/d’ file

gz@shell~$ sed -n ‘/^$/!p’ file

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