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I'm running Linux release 2.4.19-uc0, build #511 embedded on a device. It is stripped down to a very minimal configuration and so many of the normal commands are not present.
I'm trying to force a reboot from an application I've got running. I've tried the following:
system("shutdown -r");
or
sync();
reboot(LINUX_REBOOT_CMD_RESTART);
or
system("reboot");
but all leave the device in a limbo state where I can't get to it with any networking tools, but it also does not reboot. I can issue the "shutdown -r" and the "reboot" commands from a Telnet session and they work fine.
1.) Try specifying the full path.
2.) Consider using a member of the exec family instead of system
System will try to wait for "shutdown" to complete (whatever the
result of that may be).
I was trying to use the execl() function, but I noticed that shutdown is not in either /bin or /sbin and in fact I don't know where it is but I know I can execute it from Telnet. Any ideas how I would want to set up the execl() to work?
I can see the source code for a sash.c which I assume is eventually made into sh and in that code, it can parse out a bunch of commands that are not listed in /bin or /sbin (including shutdown and reboot). Perhaps this is the shell used during telnet, but I can't seem to call it from the application. I'm unclear on how to proceed.
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