Wednesday, January 23, 2013

Some SED tips for my records

To delete trailing whitespace from end of each line:
# sed 's/[ \t]*$//' filename > filename_notrailingspace

To remove all blank lines:
# sed '/^$/d' filename > filename_noblankspace

To remove all leading and trailing whitespace from end of each line:
$ cat filename | sed 's/^[ \t]*//;s/[ \t]*$//' > filename_nospace

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I have started this blog to share my work experience and spread some smart solutions on Linux to Internet community. I'm hoping more people will get benefited from this blog. Brief about me: I have 14+ years experience working as System Admin and currently work with VMware.