Shell Programming and Scripting

#!/bin/ksh
 
if [ $# -ne 1 ]
then
    echo "Please enter a filename as argument"
    exit 1
fi

cat $1 | while read TEXT
do
    LEN=${#TEXT}
    # Removed '#' because we want to compare the character
    #   not the length of the text
    firstchar=`echo ${TEXT} | cut -c 1`
    lastchar=`echo ${TEXT} | rev | cut -c 1`
 
    # Fixed the syntax for 'if' statement and changed 'eq' to '='
    if [ "$firstchar" = "$lastchar" ]
    then
        echo ${#TEXT}
    fi
done

firstchar=$(echo ${TEXT:0:1})
lastchar=$(echo ${TEXT:(-1)})

if [ "$firstchar" = "$lastchar" ]; then
    echo "$TEXT"
fi

awk -F "" '$1==$NF' RS="[ \n]" infile