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| -rw-r--r-- | chapter_05.xml | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/chapter_05.xml b/chapter_05.xml index 2c937c7..2241c22 100644 --- a/chapter_05.xml +++ b/chapter_05.xml @@ -284,6 +284,48 @@ root 3202 0.0 0.0 1660 536 tty6 Ss+ Feb15 0:00 /sbin/agetty 38 </section> <section> +<title>Task Management</title> + +<para> +<application>bash</application> has yet another cool feature to offer, +the ability to suspend and resume tasks. This allows you to +temporarily halt a running process, perform some other task, then +resume it or optionally make it run in the background. Upon pressing +<keycap>CTRL-Z</keycap>, <application>bash</application> will suspend +the running process and return you to a prompt. You can return to that +process later. Additionally, you can suspend multiple processes in +this way indefinitely. The <application>jobs</application> built-in +command will display a list of suspended tasks. +</para> + +<screen><prompt>darkstar:~$ </prompt><userinput>jobs</userinput> +[1]- Stopped vi TODO +[2]+ Stopped vi chapter_05.xml +</screen> + +<para> +In order to return to a suspended task, run the +<application>fg</application> built-in to bring the the most recently +suspended task back into the fore ground. If you have mutiple suspended +tasks, you can specify a number as well to bring one of them to the +foreground. +</para> + +<screen><prompt>darkstar:~$ </prompt><userinput>fg # "vi TODO"</userinput> +<prompt>darkstar:~$ </prompt><userinput>fg 1 # "vi chapter_05.xml"</userinput> +</screen> + +<para> +You can also background a task with (surprize) +<application>bg</application>. This will allow the process to continue +running without maintaining control of your shell. You can bring it +back to the fore ground with <application>fg</application> in the same +way as suspended tasks. +</para> + +</section> + +<section> <title>Terminals</title> <para> |