Working with the Unix OS

Unix Tools
grep "$name" $PHONEBOOK > /tmp/matches$$
if [ ! -s /tmp/matches$$ ]; then
echo "Can't find $name in the phone book"
else
# display each matching entry
while read line; do
./rolodisplay "$line"
done < /tmp/matches$$
fi
rm /tmp/matches$$
#!/bin/sh
# @(#) rolodisplay - display rolo entry from phone book
# ------------------------------------------
# | Joe's Pizza |
# | George Street |
# | Brisbane |
# | 864-3021 |
# | |
# | |
# | o o |
# ------------------------------------------
echo
echo "------------------------------------------"
entry=$1
IFS=":"
set $entry
# field separater
for line in "$1" "$2" "$3" "$4" "$5" "$6"
do
echo " |\r| $line"
# draws right side first \r sends cursor back to beginning
done
echo "| o o |"
echo "------------------------------------------"
echo
#!/bin/sh
# @(#)roloadd - add someone to the phone book
echo "Type in your new entry"
echo "enter a single RETURN when done"
first=
entry=
while true ; do
echo ">> \c"
read line
if [ -n "$line" ]; then
entry="$entry$line:"
if [ -z "$first" ]; then
first=$line
fi
else
break
fi
done
echo "$entry" >> $PHONEBOOK
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