From 6c89dab6163c04ef0ab19472b46dacccc082ee46 Mon Sep 17 00:00:00 2001
From: Kjell Kvinge <kjell@kvinge.biz>
Date: Wed, 17 Jun 2015 16:44:07 +0200
Subject: [PATCH] add description and example of sponge

---
 README.md | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/README.md b/README.md
index 5840e2f..1f92078 100644
--- a/README.md
+++ b/README.md
@@ -247,6 +247,18 @@ A few examples of piecing together commands:
       awk '{ x += $3 } END { print x }' myfile
 ```
 
+- `sponge`: from moreutils -  soak up standard input and write to a file. I you want to change a file that is the source of a pipline: Instead of:
+```bash
+cat file | sort | uniq  | iconv -f utf8 -t latin1 > /tmp/file && mv /tmp/file file
+```
+
+You can do:
+
+```bash
+cat file | sort | uniq  | iconv -f utf8 -t latin1 | sponge file
+```
+
+
 - If want to see sizes/dates on a tree of files, this is like a recursive `ls -l` but is easier to read than `ls -lR`:
 ```sh
       find . -type f -ls