grep "abc" but exclude "def" and "ghi" in the file

[Hanry Zhou]

by using one grep statement.

Can I do that?

[A. Clay Stephenson]

Multiple patterns using -e's with grep are logical OR's (or logical AND's if combined with -v) so that if any pattern matches the line is output. Thus the answer is no but you could:

grep -e 'abc' < infile | grep -v -e 'def' -e 'ghi' > outfile

[Suresh Patoria]

Hi

Use the command

grep "abc" -v "def" "ghi" <>

Thanx

[Elmar P. Kolkman]

Not grep, but tools like awk could be very handy:
awk '/def/ {next} /ghi/ {next} /abc/'
should do the trick.

[Michael Schulte zur Sur]

Hi,

Clays´s and Elmar´s work.
Suresh: it doesnt work that way. You cant include and exclude with multiple patterns at the same time.

greetings,

Mich

[Hanry Zhou]

Elmart,

What is '{next}' in awk, can you please explain it to me?

Thanks,

[Michael Schulte zur Sur]

Hi,

next tells awk to discard this line and start the loop with the next line.

greetings,

Michael

[Michael Schulte zur Sur]

Hi,

if the problem is solved, could you spare some points from the endless supply of points, HP has, for those, who could help you? ;-)

greetings,

Michael