From ce946dc97b38a720a8eb4980bbd43cd702e86614 Mon Sep 17 00:00:00 2001
From: johannst <johannes.stoelp@gmail.com>
Date: Sat, 9 Jan 2021 20:25:49 +0100
Subject: update bash/zsh notes

---
 src/tools/bash.md | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'src/tools/bash.md')

diff --git a/src/tools/bash.md b/src/tools/bash.md
index 3f53045..201a6ad 100644
--- a/src/tools/bash.md
+++ b/src/tools/bash.md
@@ -16,9 +16,12 @@
 
 ### Parameter
 ```bash
-# default param
+# default value
 bar=${foo:-some_val}  # if $foo set, then bar=$foo else bar=some_val
 
+# alternate value
+bar=${foo:+bla $foo}  # if $foo set, then bar="bla $foo" else bar=""
+
 # check param set
 bar=${foo:?msg}  # if $foo set, then bar=$foo else exit and print msg
 
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