Question on aptitude search pattern

Akhran · 02-09-2006, 10:53 AM

Sorry for the repeated post... how do I delete the posting?

Thanks.

I'm searching for a package called 'libstdc++2.10-glibc2.2'.

Code:

aptitude search libstdc++2.10-glibc2.2

or

Code:

aptitude search 'libstdc++2.10-glibc2.2'

or

Code:

aptitude search "libstdc++2.10-glibc2.2"

does not return me any result.

However, if I use

Code:

aptitude search libstdc.*2.10-glibc2.2

the package is found.

Any reason why the first three commands do not return the expected package?

Thanks !

barrulus · 02-09-2006, 11:03 AM

stnadard file globbing rules apply.

the + is a charachter that bash/csh/zsh etc see as a potential argument so it needs to be commented or excluded form the string.

a typical way to do this is using \ so libstdc\+\+etc...

remember, the exact way you would handle searching for strings using grep is how you can use aptitude/apt (in fact I think grep is what is used in the bg

Akhran · 02-10-2006, 06:52 AM

I've the impression that the quotas (and double quotes) will prevent any characters in the enclosed string from being interpreted as a potential arguement.

Guess I'm wrong.

Thanks for the pointer

Quote:

Originally Posted by barrulus

stnadard file globbing rules apply.

the + is a charachter that bash/csh/zsh etc see as a potential argument so it needs to be commented or excluded form the string.

a typical way to do this is using \ so libstdc\+\+etc...

remember, the exact way you would handle searching for strings using grep is how you can use aptitude/apt (in fact I think grep is what is used in the bg

barrulus · 02-10-2006, 08:11 AM

Quote:

Originally Posted by Akhran

I've the impression that the quotas (and double quotes) will prevent any characters in the enclosed string from being interpreted as a potential arguement.

hehe, don't quote me, I just know that when using grep through my logs I have to do the whole...

cat /var/log/messages |grep -i "running\ out\ of"

otherwise even with the quotes grep sees multiple arguments.

if what I told you doesn't work properly, try as my grep string with the double quotes AND the backslash....

saman007uk · 02-10-2006, 12:39 PM

Quote:

Originally Posted by barrulus

hehe, don't quote me, I just know that when using grep through my logs I have to do the whole...

cat /var/log/messages |grep -i "running\ out\ of"

otherwise even with the quotes grep sees multiple arguments.

if what I told you doesn't work properly, try as my grep string with the double quotes AND the backslash....

Thats how its supposed to work. You should use something like:

Code:

cat /var/log/messages |grep -i running[[:space:]]out[[:space:]]of