Bash array - Revision history

Nighthawk at 19:53, 2 October 2013

2013-10-02T19:53:02Z

Nighthawk at 02:17, 20 July 2013

2013-07-20T02:17:35Z

Nighthawk: /* Accessing arrays */

2013-05-27T21:40:58Z

‎Accessing arrays

Nighthawk at 21:37, 27 May 2013

2013-05-27T21:37:12Z

Nighthawk: Pushed from thelinuxwiki.com.

2013-02-25T19:01:59Z

Pushed from thelinuxwiki.com.

New page

Arrays do not to be declared. Bash allows on dimensional arrays.

Example Array 1:

#!/bin/bash
function test_function {
color[1]=red # <<< array assignments
color[2]=white # <<< array assignments
color[3]=blue # <<< array assignments
# Using brace expansion ...
# Bash, version 3+.
for a in {1..3}
do
echo "${color[$a]}" #<<< curly braces needed !!!!
done
}
#main body
test_function # the function msut be invoked below or after it is defined

Example Array 2

#!/bin/bash
function test_function {
color=( zero one two three ) # <<< array assignments
# Using brace expansion ...
# Bash, version 3+.
for a in {1..3}
do
echo "${color[$a]}" #<<< curly braces needed !!!!
done
}
#main body
test_function # the function msut be invoked below or after it is defined
echo "original_array = ${color[@]}"

== List all elements of original array. ==
echo "original_array = ${original_array[@]}"

== Get array length ==
echo ${#distro[@]}

[[category:bash]]

@@ Line 9: / Line 9: @@
    ${array[@]}         # All items of array (separate words, add quotes if words have spaces)
    ${!array[*]}        # All of the indexes in the array
-   ${#array[*]}        # Number of items in the array
+   ${#array[*]}        #Number of items in the array
    ${#array[0]}        # Length of item zero

@@ Line 4: / Line 4: @@
 == Accessing arrays ==
-where arr = array name
+where array = array name
 [http://www.linuxjournal.com/content/bash-arrays more info]
@@ Line 46: / Line 47: @@
    test_function # the function msut be invoked below or after it is defined
    echo "original_array = ${color[@]}"
 ==  List all elements of original array. ==

← Older revision		Revision as of 21:37, 27 May 2013
Line 1:		Line 1:
	Arrays do not to be declared. Bash allows on dimensional arrays.		Arrays do not to be declared. Bash allows on dimensional arrays.
		+
		+
		+	== Accessing arrays ==
		+
		+	where arr = array name
		+
		+	${arr[*]} # All of the items in the array
		+	${!arr[*]} # All of the indexes in the array
		+	${#arr[*]} # Number of items in the array
		+	${#arr[0]} # Length of item zero
		+	${!array[*]} # All indexes of array
		+
		+	[http://www.linuxjournal.com/content/bash-arrays more info]

	Example Array 1:		Example Array 1:

@@ Line 51: / Line 51: @@
 ==  List all elements of original array. ==
    echo "original_array = ${original_array[@]}"
 == Get array length ==
   echo ${#distro[@]}
 [[category:bash]]