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regular expression...help!!

 
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# 1  
Old 07-18-2007
regular expression...help!!
how to list all text files except the files from 20070712:

abc_20070710_123.txt
abc_20070711_123.txt
abc_20070712_123.txt

ls *.txt | egrep"[a-z]+_^20070710_[0-9]+\.txt"

Any idea please!!


Andy
# 2  
Old 07-18-2007
Code:
ls *.txt|grep -v 20070712

kamitsin
# 3  
Old 07-18-2007
kamitsin, how to solve the problem in "regular expression" not with grep -v ???
# 4  
Old 07-18-2007
Do you want an exact pattern that matches the files like "abc_20070710_123.txt" ?

Or do you want to use sed instead of grep -v

Code:
ls *.txt | sed '/20070712/d'

# 5  
Old 07-18-2007
lorcan,

>Do you want an exact pattern that matches the files like "abc_20070710_123.txt" ?

yes that what I need.

Thank you

Andy
# 6  
Old 07-18-2007
Note this is just the pattern you have asked for. And if you do not want to list the files with the pattern "20070712" you have to follow either the two methods mentioned above.

Hope this helps

Pattern

Code:
^abc_[0-9]\{8\}_[0-9]\{3\}\.txt$

or to generalize

Code:
^[a-z]\{3\}_[0-9]\{8\}_[0-9]\{3\}\.txt$

Last edited by lorcan; 07-18-2007 at 07:13 AM..
# 7  
Old 07-18-2007
lorcan,

but this is not true !!!

>And if you do not want to list the files with the pattern "20070712" you have to follow either the two methods mentioned above.

^[a-z]\{3\}_[0-9]\{8\}_[0-9]\{3\}\.txt$

the expression should match all files except 20070712
 
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