If packagehello
does not match, the output is still displayed.
Aim: to see no output
in situation 2
Situation 1:
user@hostname ~]$ sudo yum list 'package*'
packagehello
packagehello
package2world
packagehello
package2world
Situation 2:
user@hostname ~]$ sudo yum list 'package*' | grep -E 'package1.*|package2.*'
package2world
package2world
How to show the output only if
both words match using grep
?
packagehello
matches neitherpackage1.*
notpackage2.*
. Are you sure of your output? – Stéphane Chazelas Jun 25 '14 at 15:03