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I know that [ expression ] in regexp means that: match the expression .
And the ^ in expression means "not include".

My question is:
1. If Metacharacter appears within [ expression ] , which...

if there are only these 3 columns of values: 2MTEMP, MSLP, 2MDEM, try these:

list="2MTEMP
2012071512
73.28
2MTEMP
2012071513
75.65
MSLP
2012071512
1014.60
MSLP
2012071513
1015.11
2MDEW...

Would you please explain more about this? I have added some blank for read convenience.


sed 's / \[ [^]] * \] //1 '


---------- Post updated at 02:31 AM ---------- Previous update...

use sed:
sed 's/\[.*\]//' filename