From b7c68da88eec95f7705c3f4d1f0b7ba3b64abb74 Mon Sep 17 00:00:00 2001
From: Marcin Chrzanowski <m@m-chrzan.xyz>
Date: Wed, 8 Jan 2025 16:18:50 +0100
Subject: Add bash things

---
 bash.md | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/bash.md b/bash.md
index 8877982..432bc5e 100644
--- a/bash.md
+++ b/bash.md
@@ -66,6 +66,9 @@ Associative arrays:
 
 Assignment:
 
+    # Indexed
+    array=(foo bar "baz bom"...)
+    # Associative
     array=([bla]=foo [ble]=bar...)
 
 All values:
@@ -78,6 +81,23 @@ All keys:
     ${!array[*]}
     ${!array[@]}
 
+So looping:
+
+    # Over values
+    for x in "${array[@]}"; do ...
+    # Over keys (0-based indices for indexed)
+    for x in "${!array[@]}"; do ...
+
+
+Array size:
+
+    ${#array[@]}
+
+Slice:
+
+    # n elements starting at index i
+    ${array[@]:i:n}
+
 ## Commandline arguments
 
 * `$#`: number of arguments.
@@ -99,3 +119,13 @@ Positional arguments will have to be supplied after flag options (`command
 [options] <args>`):
 
     shift $((OPTIND-1))
+
+
+## Shell optional behavior/settings/options (`shopt` builtin)
+
+    # Enable
+    shopt -s <option>
+    # Disable
+    shopt -u <option>
+
+* `nocaseglob`: glob matching is case insensitive
-- 
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