How to remove blank empty lines in unix/linux
Posted on March 10, 2010 - Filed Under Linux | Leave a Comment
I found 6 ways can do it,if you know others ,pls let us know. Please see below code for detail. bash-2.05a$ cat test.txt aaaaaaa bbbbbb cccccc bash-2.05a$ grep ‘.’ test.txt aaaaaaa bbbbbb cccccc bash-2.05a$ grep -v ‘^$’ test.txt aaaaaaa bbbbbb cccccc bash-2.05a$ sed ‘/^$/d’ test.txt aaaaaaa bbbbbb cccccc bash-2.05a$ sed -n ‘/^$/!p’ test.txt [...]
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