Simple but elusive expression

I feel even shy of asking this here but it took already more time than it should.

Say I have these four files:

IPCDR_ARB06067956VPLUS_T_201103
IPCDR_ARB06067957VPLUS_T_201103
IPCDR_MOV_ARB060679开发者_运维百科59VPLUS_T_20110
MOV_CDRARB06067959VPLUS_T_201103

I want to grep for only those starting with IPCDR_MOV and MOV_CDR.

First thing off was:

ls -1 | grep "^IPCDR_MOV|^MOV_CDR"

but didn't work.

I've done plenty of dumb tests (which I wont bother you with) and nothing comes out. Can someone please put me out of my pain?

Thanks!

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Add the -E switch for using extended regex.

$ ls -1 | grep -E "^IPCDR_MOV|^MOV_CDR"
IPCDR_MOV_ARB06067959VPLUS_T_20110
MOV_CDRARB06067959VPLUS_T_201103

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Use egrep instead of grep. Otherwise it's a literal string instead of a pattern.