Two ways to use arrays in the UNIX sh (Bourne shell) script _linux Shell

SH is not as easy to define and use arrays as bash and ksh, but you can simulate arrays in other ways.

Method 1 simulates an array by using the SET command and positional parameters

# define array
set ' word 1 ' word2 word3

# Output Array's first element echo $ # Output The second element of the array echo $

# Output The third element of
the array echo $ 3

# All elements of the output array
echo $*
echo $@

# Adds an element set to the array-
-"$@" Word4
echo $

# View the number
of array elements echo $#

# Traversal array element for
i ' $@ '; do
  echo ' $i ' done

# Remove an element from the array
shift
Echo $@

# Delete all elements of an array
set X; shift

Method 2 Using the eval command to simulate an array

Defines an array and traverses the array elements:

#!/bin/sh
eval a1=word1
eval a2=word2
eval a3=word3 for
i in 1 2 3, do
  eval echo "$i element Of the array is: \ $a $i

Define the array and traverse the array elements based on a word entered by the user:

#!/bin/sh
echo "Enter the sentence:"
read str
n=0 for
word in $str; Do
  n= ' expr $n + 1 '
  eval a$n= ' $word "
  eval echo" The $n element of: \ $a $n