Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p><strong>Edit:</strong></p> <p>It appears that I misread the question. The answer is simple:</p> <pre><code>handler1 () { do_something; } handler2 () { do_something_else; } handler3 () { handler1; handler2; } trap handler3 SIGNAL1 SIGNAL2 ... </code></pre> <hr> <p>Original:</p> <p>Just list multiple signals at the end of the command:</p> <pre><code>trap function-name SIGNAL1 SIGNAL2 SIGNAL3 ... </code></pre> <p>You can find the function associated with a particular signal using <code>trap -p</code>:</p> <pre><code>trap -p SIGINT </code></pre> <p>Note that it lists each signal separately even if they're handled by the same function.</p> <p>You can add an additional signal given a known one by doing this:</p> <pre><code>eval "$(trap -p SIGUSR1) SIGUSR2" </code></pre> <p>This works even if there are other additional signals being processed by the same function. In other words, let's say a function was already handling three signals - you could add two more just by referring to one existing one and appending two more (where only one is shown above just inside the closing quotes).</p> <p>If you're using Bash >= 3.2, you can do something like this to extract the function given a signal. Note that it's not completely robust because other single quotes could appear.</p> <pre><code>[[ $(trap -p SIGUSR1) =~ trap\ --\ \'([^\047])\'.* ]] function_name=${BASH_REMATCH[1]} </code></pre> <p>Then you could rebuild your trap command from scratch if you needed to using the function name, etc.</p>
    singulars
    1. This table or related slice is empty.
    1. POmultiple bash traps for the same signal
      singulars
      1. PTQuestion
    1. PTAnswer
    1. USDennis Williamson
    1. USDennis Williamson
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. POmultiple bash traps for the same signal
      singulars
      1. PTQuestion
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTDownMod
    3. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    1. COHe asked for multiple traps for the same signal, not the same trap for multiple signals.
      singulars
      1. PO
      1. USDarron
    2. CO@Darron: Sorry, I misread the question. The answer to the **actual** question is much simpler and I've added it at the top.
      singulars
      1. PO
      1. USDennis Williamson
    3. COyou are still only firing one trap - that the trap in question invokes multiple functions and achieves the effect is more or less indisputable. The only reason to think there might be any grounds for dispute is that if handler1 is installed first, and it is designed to exit, then handler2 won't be fired. But there is still just one action fired off. (You've always been able to have an arbitrarily complex sequence of operations in the triggered action.)
      singulars
      1. PO
      1. USJonathan Leffler
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload