egrep question 1

[TheDash]

Hi,

I am trying to grep two words that end with ZZZ. They begin with AAA or BBB. Can somebody help with this?

This won't work.

egrep '^[AAA][ZZZ]$|^[BBB][ZZZ]$'

 

[vgersh99]

egrep '^(AAA|BBB).*ZZZ$' file

vlad
+----------------------------+
| #include<disclaimer.h> |
+----------------------------+

 

[TheDash]

Hi what does the . in the middle do?

 

[vgersh99]

.*

. - any character
* - preceeding character repeated 0 or more times

vlad
+----------------------------+
| #include<disclaimer.h> |
+----------------------------+

 

[TheDash]

Thank you.

 

[TheDash]

Hi..

I used it here ..

ls -l dirname | egrep '^(AAA|BBB).*ZZZ$'

to check for file names ... why doesn't it work?

 

[vgersh99]

'couse....
"^" - stands for the BEGINNING of the line.

What's the beginning of the line of 'ls -l'?

vlad
+----------------------------+
| #include<disclaimer.h> |
+----------------------------+

 

[TheDash]

ok, thanks

ls -l dirname | egrep '.*(AAA|BBB).*ZZZ$' solved it.

 

[vgersh99]

what about file: fooAAAbarZZZ.txt ?

vlad
+----------------------------+
| #include<disclaimer.h> |
+----------------------------+

 

[vgersh99]

I meant to say:
fooAAAbarZZZ

vlad
+----------------------------+
| #include<disclaimer.h> |
+----------------------------+

 

[jstreich]

Or places where the user or group is AAA or BBB?

 

[vgersh99]

hint:
ls -l | egrep '.*[ ]+(AAA|BBB)[^ ]+ZZZ$'

vlad
+----------------------------+
| #include<disclaimer.h> |
+----------------------------+