Starting directory "/usr"
 Found directories: 9536
 Found files      : 125144
 Mean files/dir   : 13.12
 Size (bytes)     : 3.0G

real	0m2.607s
user	0m0.472s
sys	0m2.064s

Starting directory "VirtualBox VMs/" (different computer)
 Found directories: 56
 Found files      : 163
 Mean files/dir   : 2.91
 Size (bytes)     : 277G

real	0m0.062s
user	0m0.008s
sys	0m0.016s

Starting directory "/usr" (in a VM)
 Found directories: 8987
 Found files      : 119022
 Mean files/dir   : 13.24
 Size (bytes)     : 3.8G

real	1m19.483s
user	0m1.855s
sys	0m25.096s

real	0m7.468s
user	0m1.000s
sys	0m4.339s

mkdir path1 path2 path3 ...

#!/usr/bin/env bash

# @(#) s1	Demonstrate mkdir "parents" option.

pe() { for _i;do printf "%s" "$_i";done; printf "\n"; }
pl() { pe;pe "-----" ;pe "$*"; }
db() { ( printf " db, ";for _i;do printf "%s" "$_i";done;printf "\n" ) >&2 ; }
db() { : ; }
C=$HOME/bin/context && [ -f $C ] && $C mkdir tree

# Remove debris from previous runs.
rm -rf a

# Create a tree.
pl " Create a tree with "parents" mode:"
mkdir -p a/b/c/d/e
tree -n -d a

# Create a sub-tree.
pl " Create a sub-tree with "parents" mode -- expecting no change:"
mkdir -p a/b/c
tree -n -d a

exit

$ ./s1

Environment: LC_ALL = , LANG = en_US.UTF-8
(Versions displayed with local utility "version")
OS, ker|rel, machine: Linux, 2.6.26-2-amd64, x86_64
Distribution        : Debian 5.0.8 (lenny, workstation) 
bash GNU bash 3.2.39
mkdir (GNU coreutils) 6.10
tree v1.5.2 (c) 1996 - 2008 by Steve Baker, Thomas Moore, Francesc Rocher, Kyosuke Tokoro 

-----
 Create a tree with parents mode:
a
`-- b
    `-- c
        `-- d
            `-- e

4 directories

-----
 Create a sub-tree with parents mode -- expecting no change:
a
`-- b
    `-- c
        `-- d
            `-- e

4 directories