| Denis Vlasenko | e471275 | 2007-04-14 15:08:41 +0000 | [diff] [blame] | 1 | Various bits of what is known about busybox shells, in no particular order. |
| 2 | |
| Denis Vlasenko | 52881e9 | 2007-04-21 13:42:52 +0000 | [diff] [blame^] | 3 | 2007-04-21 |
| 4 | hush: fixed non-backgrounding of "sleep 1 &" and totally broken |
| 5 | "sleep 1 | sleep 2 &". Noticed a bug where successive jobs |
| 6 | get numbers 1,2,3 even when job #1 has exited before job# 2 is started. |
| 7 | (bash reuses #1 in this case) |
| 8 | |
| 9 | 2007-04-21 |
| Denis Vlasenko | 2f1bb36 | 2007-04-21 10:01:14 +0000 | [diff] [blame] | 10 | hush: "sleep 1 | exit 3; echo $?" prints 0 because $? is substituted |
| 11 | _before_ pipe gets executed!! run_list_real() already has "pipe;echo" |
| 12 | parsed and handed to it for execution, so it sees "pipe"; "echo 0". |
| 13 | |
| Denis Vlasenko | 54e7ffb | 2007-04-21 00:03:36 +0000 | [diff] [blame] | 14 | 2007-04-21 |
| 15 | hush: removed setsid() and made job control sort-of-sometimes-work. |
| 16 | Ctrl-C in "rm -i" works now except for SH_STANDALONE case. |
| 17 | "sleep 1 | exit 3" + "echo $?" works, "sleep 1 | exit 3; echo $?" |
| 18 | shows exitcode 0 (should be 3). "sleep 1 | sleep 2 &" fails horribly. |
| 19 | |
| Denis Vlasenko | e471275 | 2007-04-14 15:08:41 +0000 | [diff] [blame] | 20 | 2007-04-14 |
| 21 | lash, hush: both do setsid() and as a result don't have ctty! |
| 22 | Ctrl-C doesn't work for any child (try rm -i), etc... |
| 23 | lash: bare ">file" doesn't create a file (hush works) |