Finding the empty folders, files and hidden files

1.     How to find all the empty folders which are there in a filesystem?

# find /path -depth -empty -type d –print

Example:

[root@hostx ~]# find /etc -depth -empty -type d -print

/etc/skel/.mozilla/plugins

/etc/skel/.mozilla/extensions

/etc/opt

/etc/prelink.conf.d

/etc/logwatch/scripts

/etc/X11/sysconfig

/etc/rwtab.d

/etc/oddjob

/etc/jvm-commmon

/etc/racoon/certs

/etc/sasl2

/etc/subversion

/etc/dbus-1/session.d

/etc/gconf/gconf.xml.mandatory

/etc/dnsmasq.d

/etc/NetworkManager/VPN

/etc/NetworkManager/dispatcher.d

/etc/hal/fdi/preprobe

/etc/hal/fdi/information
.

[Output truncated]
.
[root@hostx ~]#

[root@hostx ~]# cd /etc/sysconfig/pgsql

[root@hostx pgsql]# ls -la

total 16

drwxr-xr-x  2 root root 4096 Jan 12  2008 .

drwxr-xr-x 12 root root 4096 Jul 14 05:23 ..                            ß Nothing exists

[root@hostx pgsql]# cd /etc/pm/hooks

[root@hostx hooks]# ls -la

total 16

drwxr-xr-x 2 root root 4096 Jan 22  2009 .                              ß Nothing exists

drwxr-xr-x 5 root root 4096 Oct 12  2009 ..

[root@hostx hooks]#




How to search for hidden files which are there in a particular folder?


# find /path -type f -name ".*" -print


Example:


[root@hostx ~]# find /etc -type f -name ".*" -print
/etc/skel/.bash_profile
/etc/skel/.kde/Autostart/.directory
/etc/skel/.bash_logout
/etc/skel/.zshrc
/etc/skel/.bashrc
/etc/skel/.emacs
/etc/.pwd.lock
/etc/lvm/cache/.cache
/etc/news/.profile
[root@hostx ~]#

How to find empty files in a given folder ?

# find /path -type f -size 0 -print

Example:

# find /etc -type f -size 0 -print
/etc/wvdial.conf
/etc/cron.deny
/etc/security/opasswd
/etc/security/console.apps/xserver
/etc/motd
/etc/dumpdates
/etc/environment
/etc/.pwd.lock
/etc/lsb-release.d/core-3.0-noarch
/etc/lsb-release.d/core-3.0-amd64