Add bash arrays

1 files changed, 24 insertions, 0 deletions

diff --git a/bash.md b/bash.md
index 41e8f05..e342625 100644
--- a/bash.md
+++ b/bash.md
@@ -53,3 +53,27 @@ Don't interpolate variables:
     cat << 'EOF' > file
     bla bla
     EOF
+
+## Arrays
+
+Declaring indexed arrays:
+
+    declare -a name
+
+Associative arrays:
+
+    declare -A name
+
+Assignment:
+
+    array=([bla]=foo [ble]=bar...)
+
+All values:
+
+    ${array[*]} # one word, elements separated with first character of $IFS
+    ${array[@]} # separate words when double quoted
+
+All keys:
+
+    ${!array[*]}
+    ${!array[@]}