This is a problem with basic Unix scripting. Thanks for looking!
1. The problem statement, all variables and given/known data: Make a script that will compare 2 given directories and output those filenames that are in Directory 1 and not 2
2. Relevant commands, code, scripts, algorithms:
Sed & Awk can't be used. The main problem with my code below is that the variable x, after being assigned the value 1 seemingly changes back 0 after leaving the if statement.
Directory 1 (d1) has the three files
A, B, C
Directory 2 (d2) has the three files
A, C, E
Therefore the following should be the output:
Code:
B
3. The attempts at a solution (include all code and scripts):
This is my script so far.
Code:
x=0
ls $1 | while read input
do
x=0
ls $2 | while read input1
do
if [ "$input" = "$input1" ]
then
#echo "both have $input"
x=10
echo "" #TRACE
echo "$x" #TRACE
# If File found in both d1 and d2, x value is changed to one
fi
done
echo "$x" #TRACE
if [ "$x" != "10" ]
then
echo "$input"
fi
done
With the trace included above, I get
Code:
matrix:~> test111 one two
10
0
total 0
10
0
A
0
B
10
0
C
Without Trace:
Code:
total 0
A
B
C
Meaning after the x is changed to 10 when a match is found, its later turned back to 0 for a reason I cant explain
If anyone could help be out I'd really appreciate it.
Thanks in advance!
4. Complete Name of School (University), City (State), Country, Name of Professor, and Course Number (Link to Course):
University of Toronto, Toronto, Canada, Prof. Michaels
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