Often, we are searching for files and directories from the GUI. We can also perform searches in the shell. First, we can use the find command; let's look for files that have a .conf extension. The search function would be as follows:
[philip@localhost ~]$ find /etc -iname "*.cfg"
find: ‘/etc/grub.d': Permission denied
find: ‘/etc/cups/ssl': Permission denied
/etc/libblockdev/conf.d/00-default.cfg
find: ‘/etc/audit': Permission denied
find: ‘/etc/dhcp': Permission denied
find: ‘/etc/sssd': Permission denied
/etc/grub2.cfg
find: ‘/etc/audisp': Permission denied
find: ‘/etc/polkit-1/rules.d': Permission denied
find: ‘/etc/polkit-1/localauthority': Permission denied
find: ‘/etc/openvpn/server': Permission denied
find: ‘/etc/openvpn/client...