Shell Programming and Scripting

 
     1  #!/bin/bash
     2  echo "This Script interprets each input entered and descrambles the letters to determine the words that match. :)"
     3
     4  #[[ -z "$1"]] && echo "You must input 1 or more scrambled words to be unscrambled." && exit 1
     5
     6  until [ -z "$1" ]; do #Continue to take in parameters until none left
     7    word=$1
     8    len=${#word}
     9    cmd="egrep -i \"\<[$word]{$len}\>\" /usr/dict/words"
    10
    11
    12
    13      for x in $(seq 0 $((len-1))) ; do
    14        while [ -n "$word" ]; do
    15
    16          ltr=${word:0:1}
    17          nxt=${word//[^$ltr]/}
    18          cnt=${#nxt}
    19          re="$cmd"
    20
    21            if  [ "${cnt}" -gt "1" ];
    22              then cmd="$re |egrep -i \"((${ltr}.*){${cnt}})\"";
    23              #cmd="$re |egrep -i \"((.*${ltr}){${cnt}})\""
    24            else
    25                cmd="$re|egrep -i \"(${ltr}.*)\"";
    26            fi
    27
    28          #echo $cmd
    29
    30          word=${word//$ltr/}
    31          len=${#word}
    32        done #End of for loop
    33      done #End of for loop
    34
    35    echo $cmd
    36    eval "$cmd" #Evaluate Regular Expression
    37    shift #Shift parameters by 1
    38  done #End of Until loop

# returns good (0) if the word contains only alpha chracters
function word_ok
{
        case $1 in 
                *[^a-zA-Z]*)    return 1;;   # return bad if word contains any non-alpha
        esac

        return 0
}

# example usage:
if word_ok $1
then
        echo "word is ok: $1"
else
        echo "word is bad: $1"
fi

./eggs dda godgy dnoaym iaMmi enlesasm iplup

and output of:

This Script interprets each input entered and descrambles the letters to determine the words that match. :)
add
dad
doggy
dynamo
Monday
Miami
lameness
maleness
maneless
nameless
pupil

But if there was a word entered with non alpha then it should output a comment that the string saying that it is ignored like:

Ignoring "l34d" as it contains non-alpha characters.