Differences between version 2 and revision by previous author of SIGHUP.
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| Newer page: | version 2 | Last edited on Thursday, September 26, 2002 11:13:59 pm | by JohnMcPherson | Revert |
| Older page: | version 1 | Last edited on Thursday, September 26, 2002 7:01:40 pm | by PerryLorier | Revert |
@@ -1,3 +1,6 @@
!!!Signal: Hangup
This signal is generated by the kernel when your controlling terminal goes away. Or, in simplier terms, when you close the Xterm, or hang up a modem. Since daemons run in the background and don't have a controlling terminal, they often use SIGHUP to signal that they should reread their configuration files. This can cause issues with some programs that work as both a daemon and an interactive program, such as fetchmail(1).
+An example is init(1), the first process created (which is responsible for creating all other processes, like getty for logging in). If you edit /etc/inittab, its configuration file, you can do
+ kill -HUP 1
+and it will re-read the config file.
