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#!/bin/bash
# lookup: Does a dictionary lookup on each word in a data file.
file=words.data # Data file from which to read words to test.
echo
echo "Testing file $file"
echo
while [ "$word" != end ] # Last word in data file.
do # ^^^
read word # From data file, because of redirection at end of loop.
look $word > /dev/null # Don't want to display lines in dictionary file.
# Searches for words in the file /usr/share/dict/words
#+ (usually a link to linux.words).
lookup=$? # Exit status of 'look' command.
if [ "$lookup" -eq 0 ]
then
echo "\"$word\" is valid."
else
echo "\"$word\" is invalid."
fi
done <"$file" # Redirects stdin to $file, so "reads" come from there.
echo
exit 0
# ----------------------------------------------------------------
# Code below line will not execute because of "exit" command above.
# Stephane Chazelas proposes the following, more concise alternative:
while read word && [[ $word != end ]]
do if look "$word" > /dev/null
then echo "\"$word\" is valid."
else echo "\"$word\" is invalid."
fi
done <"$file"
exit 0
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