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Simple commands:
$ echo foo
foo
$ printf 'bar\nbaz\n' | cat
bar
baz
Multi-line command:
$ foo() {
> echo bar
> }
$ foo
bar
Regular expression:
$ echo foobarbaz
foobar.* (re)
Glob:
$ printf '* \\foobarbaz {10}\n'
\* \\fo?bar* {10} (glob)
Literal match ending in (re) and (glob):
$ echo 'foo\Z\Z\Z bar (re)'
foo\Z\Z\Z bar (re)
$ echo 'baz??? quux (glob)'
baz??? quux (glob)
Exit code:
$ (exit 1)
[1]
Write to stderr:
$ echo foo >&2
foo
No newline:
$ printf foo
foo (no-eol)
$ printf 'foo\nbar'
foo
bar (no-eol)
$ printf ' '
(no-eol)
$ printf ' \n '
(no-eol)
$ echo foo
foo
$ printf foo
foo (no-eol)
Escaped output:
$ printf '\00\01\02\03\04\05\06\07\010\011\013\014\016\017\020\021\022\n'
\x00\x01\x02\x03\x04\x05\x06\x07\x08\t\x0b\x0c\x0e\x0f\x10\x11\x12 (esc)
$ printf '\023\024\025\026\027\030\031\032\033\034\035\036\037\040\047\n'
\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f ' (esc)
$ echo hi
\x68\x69 (esc)
$ echo '(esc) in output (esc)'
(esc) in output (esc)
$ echo '(esc) in output (esc)'
(esc) in output \x28esc\x29 (esc)
Command that closes a pipe:
$ cat /dev/urandom | head -1 > /dev/null
If Cram let Python's SIGPIPE handler get inherited by this script, we
might see broken pipe messages.
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