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why does this simple program give such a weird output?
The Next CEO of Stack OverflowSimple desktop program instantly closesWhy does this script work in the current directory but fail when placed in the path?Why does this bash script not work?Weird output by declare and arrayWhy I obtain this error when I try to perform this simple bash script?run bash script from another script and redirect its outputWhy does my terminal look like this?why this shell script program is not workingWhy does this cronjob not work?Why does Bash output / is a directory?
I've just started learning how to use arrays so sorry if the answer is somehow obvious. I made a simple program which i thought would just count normally. The output of this program ended up being not only backwards at first but very strange. the program is:
#!/bin/bash
num=1
declare -A A1
while true
do
A1[$(($num + 1))]=$num
num=$(( $num + 1 ))
e=0
for e in $A1[@]
do
echo $e
done
echo "e is $e"
echo "num is $num"
sleep 0.1
done
but it's output was started doing some really weird stuff after 8 as shown here:
1
e is 1
num is 2
2
1
e is 1
num is 3
3
2
1
e is 1
num is 4
4
3
2
1
e is 1
num is 5
5
4
3
2
1
e is 1
num is 6
6
5
4
3
2
1
e is 1
num is 7
7
6
5
4
3
2
1
e is 1
num is 8
8
7
6
5
4
3
2
1
e is 1
num is 9
8
7
6
5
4
3
2
1
9
e is 9
num is 10
8
7
6
5
4
3
2
1
9
10
e is 10
num is 11
8
7
6
5
4
3
2
1
11
9
10
e is 10
num is 12
8
7
6
5
4
3
2
1
11
12
9
10
e is 10
num is 13
8
7
6
5
4
3
2
1
11
12
9
10
13
e is 13
num is 14
8
7
6
5
4
3
2
1
11
12
9
10
13
14
e is 14
num is 15
8
7
6
5
4
3
2
1
11
12
9
10
15
13
14
e is 14
num is 16
8
7
6
5
4
3
2
1
11
12
9
10
15
16
13
14
e is 14
num is 17
8
7
6
5
4
3
2
1
17
11
12
9
10
15
16
13
14
e is 14
num is 18
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
e is 14
num is 19
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
19
e is 19
num is 20
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
20
19
e is 19
num is 21
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
21
20
19
e is 19
num is 22
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
22
21
20
19
e is 19
num is 23
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
23
22
21
20
19
e is 19
num is 24
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
24
23
22
21
20
19
e is 19
num is 25
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
25
24
23
22
21
20
19
e is 19
num is 26
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
e is 19
num is 27
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
27
e is 27
num is 28
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
e is 27
num is 29
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
29
e is 29
num is 30
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
29
30
e is 30
num is 31
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
29
30
31
e is 31
num is 32
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
29
30
31
32
e is 32
num is 33
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
33
29
30
31
32
e is 32
num is 34
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
33
34
29
30
31
32
e is 32
num is 35
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
33
34
35
29
30
31
32
e is 32
num is 36
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
33
34
35
36
29
30
31
32
e is 32
num is 37
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
33
34
35
36
29
30
31
32
37
e is 37
num is 38
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
33
34
35
36
29
30
31
32
37
38
e is 38
num is 39
39
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
33
34
35
36
29
30
31
32
37
38
e is 38
num is 40
^C
can anybody explain this?
command-line bash scripts
asked 12 mins ago
TheRedStormerTheRedStormer
62
add a comment |
I've just started learning how to use arrays so sorry if the answer is somehow obvious. I made a simple program which i thought would just count normally. The output of this program ended up being not only backwards at first but very strange. the program is:
#!/bin/bash
num=1
declare -A A1
while true
do
A1[$(($num + 1))]=$num
num=$(( $num + 1 ))
e=0
for e in $A1[@]
do
echo $e
done
echo "e is $e"
echo "num is $num"
sleep 0.1
done
but it's output was started doing some really weird stuff after 8 as shown here:
1
e is 1
num is 2
2
1
e is 1
num is 3
3
2
1
e is 1
num is 4
4
3
2
1
e is 1
num is 5
5
4
3
2
1
e is 1
num is 6
6
5
4
3
2
1
e is 1
num is 7
7
6
5
4
3
2
1
e is 1
num is 8
8
7
6
5
4
3
2
1
e is 1
num is 9
8
7
6
5
4
3
2
1
9
e is 9
num is 10
8
7
6
5
4
3
2
1
9
10
e is 10
num is 11
8
7
6
5
4
3
2
1
11
9
10
e is 10
num is 12
8
7
6
5
4
3
2
1
11
12
9
10
e is 10
num is 13
8
7
6
5
4
3
2
1
11
12
9
10
13
e is 13
num is 14
8
7
6
5
4
3
2
1
11
12
9
10
13
14
e is 14
num is 15
8
7
6
5
4
3
2
1
11
12
9
10
15
13
14
e is 14
num is 16
8
7
6
5
4
3
2
1
11
12
9
10
15
16
13
14
e is 14
num is 17
8
7
6
5
4
3
2
1
17
11
12
9
10
15
16
13
14
e is 14
num is 18
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
e is 14
num is 19
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
19
e is 19
num is 20
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
20
19
e is 19
num is 21
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
21
20
19
e is 19
num is 22
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
22
21
20
19
e is 19
num is 23
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
23
22
21
20
19
e is 19
num is 24
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
24
23
22
21
20
19
e is 19
num is 25
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
25
24
23
22
21
20
19
e is 19
num is 26
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
e is 19
num is 27
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
27
e is 27
num is 28
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
e is 27
num is 29
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
29
e is 29
num is 30
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
29
30
e is 30
num is 31
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
29
30
31
e is 31
num is 32
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
29
30
31
32
e is 32
num is 33
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
33
29
30
31
32
e is 32
num is 34
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
33
34
29
30
31
32
e is 32
num is 35
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
33
34
35
29
30
31
32
e is 32
num is 36
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
33
34
35
36
29
30
31
32
e is 32
num is 37
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
33
34
35
36
29
30
31
32
37
e is 37
num is 38
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
33
34
35
36
29
30
31
32
37
38
e is 38
num is 39
39
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
33
34
35
36
29
30
31
32
37
38
e is 38
num is 40
^C
can anybody explain this?
command-line bash scripts
asked 12 mins ago
TheRedStormerTheRedStormer
62
add a comment |
I've just started learning how to use arrays so sorry if the answer is somehow obvious. I made a simple program which i thought would just count normally. The output of this program ended up being not only backwards at first but very strange. the program is:
#!/bin/bash
num=1
declare -A A1
while true
do
A1[$(($num + 1))]=$num
num=$(( $num + 1 ))
e=0
for e in $A1[@]
do
echo $e
done
echo "e is $e"
echo "num is $num"
sleep 0.1
done
but it's output was started doing some really weird stuff after 8 as shown here:
1
e is 1
num is 2
2
1
e is 1
num is 3
3
2
1
e is 1
num is 4
4
3
2
1
e is 1
num is 5
5
4
3
2
1
e is 1
num is 6
6
5
4
3
2
1
e is 1
num is 7
7
6
5
4
3
2
1
e is 1
num is 8
8
7
6
5
4
3
2
1
e is 1
num is 9
8
7
6
5
4
3
2
1
9
e is 9
num is 10
8
7
6
5
4
3
2
1
9
10
e is 10
num is 11
8
7
6
5
4
3
2
1
11
9
10
e is 10
num is 12
8
7
6
5
4
3
2
1
11
12
9
10
e is 10
num is 13
8
7
6
5
4
3
2
1
11
12
9
10
13
e is 13
num is 14
8
7
6
5
4
3
2
1
11
12
9
10
13
14
e is 14
num is 15
8
7
6
5
4
3
2
1
11
12
9
10
15
13
14
e is 14
num is 16
8
7
6
5
4
3
2
1
11
12
9
10
15
16
13
14
e is 14
num is 17
8
7
6
5
4
3
2
1
17
11
12
9
10
15
16
13
14
e is 14
num is 18
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
e is 14
num is 19
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
19
e is 19
num is 20
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
20
19
e is 19
num is 21
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
21
20
19
e is 19
num is 22
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
22
21
20
19
e is 19
num is 23
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
23
22
21
20
19
e is 19
num is 24
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
24
23
22
21
20
19
e is 19
num is 25
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
25
24
23
22
21
20
19
e is 19
num is 26
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
e is 19
num is 27
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
27
e is 27
num is 28
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
e is 27
num is 29
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
29
e is 29
num is 30
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
29
30
e is 30
num is 31
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
29
30
31
e is 31
num is 32
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
29
30
31
32
e is 32
num is 33
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
33
29
30
31
32
e is 32
num is 34
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
33
34
29
30
31
32
e is 32
num is 35
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
33
34
35
29
30
31
32
e is 32
num is 36
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
33
34
35
36
29
30
31
32
e is 32
num is 37
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
33
34
35
36
29
30
31
32
37
e is 37
num is 38
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
33
34
35
36
29
30
31
32
37
38
e is 38
num is 39
39
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
33
34
35
36
29
30
31
32
37
38
e is 38
num is 40
^C
can anybody explain this?
command-line bash scripts
asked 12 mins ago
TheRedStormerTheRedStormer
62
I've just started learning how to use arrays so sorry if the answer is somehow obvious. I made a simple program which i thought would just count normally. The output of this program ended up being not only backwards at first but very strange. the program is:
#!/bin/bash
num=1
declare -A A1
while true
do
A1[$(($num + 1))]=$num
num=$(( $num + 1 ))
e=0
for e in $A1[@]
do
echo $e
done
echo "e is $e"
echo "num is $num"
sleep 0.1
done
but it's output was started doing some really weird stuff after 8 as shown here:
1
e is 1
num is 2
2
1
e is 1
num is 3
3
2
1
e is 1
num is 4
4
3
2
1
e is 1
num is 5
5
4
3
2
1
e is 1
num is 6
6
5
4
3
2
1
e is 1
num is 7
7
6
5
4
3
2
1
e is 1
num is 8
8
7
6
5
4
3
2
1
e is 1
num is 9
8
7
6
5
4
3
2
1
9
e is 9
num is 10
8
7
6
5
4
3
2
1
9
10
e is 10
num is 11
8
7
6
5
4
3
2
1
11
9
10
e is 10
num is 12
8
7
6
5
4
3
2
1
11
12
9
10
e is 10
num is 13
8
7
6
5
4
3
2
1
11
12
9
10
13
e is 13
num is 14
8
7
6
5
4
3
2
1
11
12
9
10
13
14
e is 14
num is 15
8
7
6
5
4
3
2
1
11
12
9
10
15
13
14
e is 14
num is 16
8
7
6
5
4
3
2
1
11
12
9
10
15
16
13
14
e is 14
num is 17
8
7
6
5
4
3
2
1
17
11
12
9
10
15
16
13
14
e is 14
num is 18
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
e is 14
num is 19
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
19
e is 19
num is 20
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
20
19
e is 19
num is 21
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
21
20
19
e is 19
num is 22
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
22
21
20
19
e is 19
num is 23
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
23
22
21
20
19
e is 19
num is 24
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
24
23
22
21
20
19
e is 19
num is 25
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
25
24
23
22
21
20
19
e is 19
num is 26
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
e is 19
num is 27
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
27
e is 27
num is 28
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
e is 27
num is 29
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
29
e is 29
num is 30
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
29
30
e is 30
num is 31
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
29
30
31
e is 31
num is 32
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
29
30
31
32
e is 32
num is 33
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
33
29
30
31
32
e is 32
num is 34
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
33
34
29
30
31
32
e is 32
num is 35
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
33
34
35
29
30
31
32
e is 32
num is 36
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
33
34
35
36
29
30
31
32
e is 32
num is 37
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
33
34
35
36
29
30
31
32
37
e is 37
num is 38
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
33
34
35
36
29
30
31
32
37
38
e is 38
num is 39
39
8
7
6
5
4
3
2
1
17
18
11
12
9
10
15
16
13
14
26
25
24
23
22
21
20
19
28
27
33
34
35
36
29
30
31
32
37
38
e is 38
num is 40
^C
can anybody explain this?
command-line bash scripts
command-line bash scripts
asked 12 mins ago
TheRedStormerTheRedStormer
62
asked 12 mins ago
TheRedStormerTheRedStormer
62
edited 5 mins ago
TheRedStormer
asked 12 mins ago
TheRedStormerTheRedStormer
62
asked 12 mins ago
TheRedStormerTheRedStormer
62
asked 12 mins ago
TheRedStormerTheRedStormer
62
62
add a comment |
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