b05d8c3be65091153b4d37cbde9d2ee46f9cba2e

 1diff --git a/plugins/common-aliases/README.md b/plugins/common-aliases/README.md
 2index 0354c7a3f6369279d85e22dc7aa070996dd0595a..1417c3056865cf82a9e6cef63afdd9bc234253cf 100644
 3--- a/plugins/common-aliases/README.md
 4+++ b/plugins/common-aliases/README.md
 5@@ -35,9 +35,11 @@ plugins=(... common-aliases)
 6 | mv    | `mv -i`               | Move a file                                                                     |
 7 | zshrc | `${=EDITOR} ~/.zshrc` | Quickly access the ~/.zshrc file                                                |
 8 | dud   | `du -d 1 -h`          | Display the size of files at depth 1 in current location in human-readable form |
 9-| duf   | `du -sh`              | Display the size of files in current location in human-readable form            |
10+| duf\* | `du -sh`              | Display the size of files in current location in human-readable form            |
11 | t     | `tail -f`             | Shorthand for tail which outputs the last part of a file                        |
12 
13+\* Only if the [`duf`](https://github.com/muesli/duf) command isn't installed.
14+
15 ### find and grep
16 
17 | Alias | Command                                            | Description                          |
18@@ -66,12 +68,15 @@ These aliases are expanded in any position in the command line, meaning you can
19 end of the command you've typed. Examples:
20 
21 Quickly pipe to less:
22+
23 ```zsh
24 $ ls -l /var/log L
25 # will run
26 $ ls -l /var/log | less
27 ```
28+
29 Silences stderr output:
30+
31 ```zsh
32 $ find . -type f NE
33 # will run
34diff --git a/plugins/common-aliases/common-aliases.plugin.zsh b/plugins/common-aliases/common-aliases.plugin.zsh
35index 8b58b631077b6f3cf4da1430aefb3c71e97bf3f8..3139b821aa128fe1c51b425018401b4a34f15f9e 100644
36--- a/plugins/common-aliases/common-aliases.plugin.zsh
37+++ b/plugins/common-aliases/common-aliases.plugin.zsh
38@@ -35,7 +35,7 @@ alias -g NUL="> /dev/null 2>&1"
39 alias -g P="2>&1| pygmentize -l pytb"
40 
41 alias dud='du -d 1 -h'
42-alias duf='du -sh *'
43+(( $+commands[duf] )) || alias duf='du -sh *'
44 (( $+commands[fd] )) || alias fd='find . -type d -name'
45 alias ff='find . -type f -name'
46