IF condition against a ARRAY in shell script

Shell Programming and Scripting
1

Hi,

I want to check a particular string inserted by User to be checked against the values i already have in a ARRAY string using IF condition. Is this possible? if yes how to do that.
example :

i have a,b,c,d,e,f values in a array called values

i asked user to enter a value:
user entered b as a value
read uservalue

i have to check if the user entered value is present there inside my array using IF condition:
if [ $uservalue exist in ARRAY value ]

2

Try something like this:

#!/bin/ksh
.
.
.

read ans

i=0
len=${#value[*]}

while [ $len -gt $i ]
do
  if [ "${value[$i]}" = "$ans" ]
  then
    # Do your stuff here
  fi
  i=$(( $i + 1 ))
done

I recommend you to read one of the tutorials here:

http://www.unix.com/answers-frequently-asked-questions/13774-unix-tutorials-programming-tutorials-shell-scripting-tutorials.html

3 
#!/bin/bash
ARRAY=( a b c d e f )
read -p "Enter element : " K
FOUND=0
for E in ${ARRAY[@]}
do	[ "$K" = "$E" ] && FOUND=1
done
echo -n "$K "; ((FOUND)) && echo "found" || echo "not found"

I use a flag here but if you only have to perform an action if found then use following code

#!/bin/bash
ARRAY=( a b c d e f )
read -p "Enter element : " K
for E in ${ARRAY[@]}
do	if [ "$K" = "$E" ]
        then echo "$K found"
        fi
done