String comparison in calculated item

[ToomasAas]

Hello!

I have a Text item on two hosts. I need to create a trigger which detects if values of this item are different on host A and host B. I thought I could create a calculated item for this purpose, but from the manual I can't figure out a way to do so.

Or maybe someone can recommend an alternative way to achieve my goal. What I actually need to detect is if the contents of specific directory on two hosts are (not) identical. I started by creating an userparameter which basically does 'ls -l /the/directory | md5sum' and stores the MD5 hash as Text item on each host. However, the next step of actually comparing these items on two hosts is turning out to be a challenge...

I am using Zabbix 2.4.1.

[nakutnyi]

Hello.
I believe you already found the solution, but just in case someone else needs help, it can be done like follows:
{hostname:item.key.regexp(^(string_to_compare_with )$)}=0

[twentyninehairs]

Can the above function be used to compare an item string value to another item string value? I tried {template:item.key.regexp(^(template:item.key.last ())$)}=0 and I also tried {template:item.key.regexp(template:item.key.last() ))}=0. Neither seem to work.

[Jeroloog]

Late to the party, but I also need to compare 2 strings from 2 known items. Did you ever find a solution?