Re: regular expression and not form

caiqian@xxxxxxxxx wrote:
Hi,

Xicheng Jia wrote:
caiqian@xxxxxxxxx wrote:
Hi,

How can I express "match any string except 'ABC'" in regular
expression?


If you can use tools supporting Perl-compatible regex, like Perl,
python, Ruby, then, the regex can be written as:

^(?!.*ABC)

The following command prints all lines which dont contain the string
"ABC" in *myfile*

perl -ne 'print if/^(?!.*ABC)/' myfile

Xicheng

Works fine. I am still wondering if there is a way to do the following
in Bash use =~, and my grep does not support -P (perl regular
expression) yet.

Qian

grep -v ABC

:-)

Xicheng

.

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