patrick.sirref.org
Shells in OCaml
1Testing functions and position arguments.
2
3First is simply that the original positional arguments are preserved.
4
5 $ cat > test.sh << EOF
6 > echo "\$1 from \$0"
7 > EOF
8
9 $ sh test.sh hello
10 hello from test.sh
11 $ msh test.sh hello
12 hello from test.sh
13
14Next, do they work inside function definitions!
15
16 $ cat > test.sh << EOF
17 > shout () {
18 > echo \$0
19 > echo \$1 | tr a-z A-Z
20 > }
21 > shout "hi there"
22 > EOF
23
24 $ sh test.sh
25 test.sh
26 HI THERE
27 $ msh test.sh
28 test.sh
29 HI THERE
30
31Redirection and exit codes should be preserved to just like any other command.
32
33 $ cat > test.sh << EOF
34 > goodbye () {
35 > echo "eybdoog"
36 > exit \$1
37 > }
38 > goodbye 0 | rev
39 > goodbye 1 | rev
40 > goodbye 128
41 > EOF
42
43 $ sh test.sh
44 goodbye
45 goodbye
46 eybdoog
47 [128]
48
49 $ msh test.sh
50 goodbye
51 goodbye
52 eybdoog
53 [128]