How do i know which package a command comes from in redhat?

giantpanda

If you need to find out which command a package is from, you can do the following:

$ sudo yum provides ls 
coreutils-8.22-11.el7.x86_64 : A set of basic GNU tools commonly used in shell scripts
Repo        : rhui-REGION-rhel-server-releases
Matched from:
Filename    : /bin/ls

Here the package coreutils-8.22-11.el7.x86_64 is where the command is bundled into.

This can also be specified as.

$ sudo yum whatprovides ls