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Forum: Shell Programming and Scripting 04-06-2012

substitute in first column

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[root@dist unix]# sed 's/../&:/g;s/://7g' file ...

[root@dist unix]# sed 's/../&:/g;s/://7g' file
21:00:00:12:34:34:56 asdf
21:00:00:12:34:34:78 asd3
21:00:00:12:34:34:23 asdf
21:00:00:12:34:34:45 asdf
21:00:00:12:34:34:89 asdf

Forum: Shell Programming and Scripting 04-03-2012

remove space of each line

2,949

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sed 's/^ //' file

sed 's/^ //' file

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