Shell Programming and Scripting

Hi,

im working on an assignment (airline ticketing system). im kinda having problems with the search function. i want users to be able to search by departure time or by flight. however, my output displays the whole chunk of data instead of what they are supposedly searching for. appreciate if anyone could guide me on how to rectify it using grep. im currently using awk. thanks in advance.


here are my codes:

Code:

 
# search by departure time or by flight
select_search()
{
 #customer search for departure times
 echo -n "Departure Time: "
 read departure time
 echo -n "Flight: "
 read flight
 #search for existing data
 if grep -q "$TIME" "airlines.txt"; then
 #search for departure time
 if [ '$FLIGHT" = "" ]; then
 awk -F: -v0FS="" -vt="$TIME" '$0~t{$1=$1;print}' airlines.txt
 else
 awk -F: -v0FS="" -vt="$FLIGHT" '$0~t{$1=$1;print}' airlines.txt
 fi
 else
 echo ""
 echo -e "Flight not found!"
 fi
}

and this is my airlines.txt file.
0600 - 01Jan, SIA
1000 - 01Jan, Cathay Pacific
0830 - 03Jan, SIA
1100 - 03Jan, Qantas Air
0830 - 03Jan, China Air
1200 - 03Jan, SIA

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