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1answer
27 views

dhcp without dns: ping `hostname` not working. Auto add hostname to /etc/hosts?

On RHEL 6.5 how to make my own hostname locally resolvable, if my ip address is dynamic and not registered in DNS? I know, it's possible to add dhcp hook scripts. Is there a similar way to hook the ...
0
votes
1answer
10 views

Dpkg env variable DPKG_HOOK_ACTION is not set in hook script

According to man dpkg I can use DPKG_HOOK_ACTION to get the current dpkg action being run in my dpkg hook script --pre-invoke=command --post-invoke=command Set an invoke hook command to be run ...
8
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3answers
188 views

How can I run a command in bash after any change in $PWD?

zsh provides some nice hook functions, including chpwd for running a function after the user changes directories. # zsh only function greet() { echo 'hi'; } chpwd_functions+=("greet") cd .. # hi ...
1
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1answer
293 views

gphoto2 hook scripts - a guide?

I posted this on raspberrypi.stackexchange but was directed here. I'm new to Linux / Unix, and I'm trying to get a tether / display script going with gphoto2. gphoto2 --capture-tethered ...
4
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2answers
116 views

Falling to git checkout on non-found bash commands

When I type (in bash) a command which linux does not find, it usually does something like this: $ x x: command not found but when I type a command which is not found but which is similar in some ...
4
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4answers
446 views

Run command when temperature exceeds threshold, without daemon

I need to run a specific command if my laptop gets too hot (for example, send a STOP signal to Firefox or Virtualbox in order to prevent my laptop from shutting down violently and damaging my hard ...
3
votes
2answers
453 views

Encrypt hook in mkinitcpio.conf for full system encryption USB drive Arch install

I have installed Arch Linux on a USB drive with full system encryption using LUKS. The Arch wiki as usual walked me through almost everything. The only issue I ran into was using setting up the hooks ...
1
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1answer
189 views

Forcing keys to run bash scripts

Is it possible to define bash scripts for all keys on keyboard so that by pressing any key the bash script for that key will be run? The scripts may do anything, for instance they may save the key ...
1
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0answers
146 views

Can I install a sync completion hook with rsync daemon?

Like hooks in svn or git, can I install a server-side hook script for rsync daemon? For sync completion event. I am using FreeBSD9/rsyncd.
1
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1answer
582 views

Set environment variable for all of tmux shells when gnome-sessions gets restarted

To solve this problem, I need to set the environment variable DBUS_SESSION_BUS_ADDRESS for all shells inside tmux every time I restart gnome without restarting tmux (this is often). How can I best ...
1
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1answer
756 views

Trigger action each time a file is modified [duplicate]

Possible Duplicate: Can a bash script be hooked to a file? Is it possible to mount a mechanism to a file to perform an action (e.g. mark the change in some log file and such) each time the ...
1
vote
1answer
619 views

How to preload my .so everytime an application executes?

I've successfully used a hook under linux with this article: http://hackerboss.com/overriding-system-functions-for-fun-and-profit/ Now I want to make my .so file load every time espeak loads up. No ...
6
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3answers
5k views

How to execute a script on gdm login automatically for all users?

What file should I modify to execute some instructions when any user logs in through gdm? I tried /etc/bashrc but that is executed ony when starting bash (and each time an xterm is open). I'd like to ...
1
vote
0answers
248 views

How can I make scripts run when a file/directory changes in Linux (like Mac OS X’s launchd)? [duplicate]

Possible Duplicate: Can a bash script be hooked to a file? On Mac OS X, there’s a handy daemon called launchd which (amongst other things) allows you to have scripts run when files or ...
9
votes
2answers
2k views

Ssh login hook?

Is there a way to run a script/command every time a user connects using ssh? Can it be configured globally (i.e run the script when any user login)? I came across this question on Identica, but there ...
27
votes
3answers
2k views

Can a bash script be hooked to a file?

I want a script to sleep unless a certain file is modifed/deleted (or a file created in a certain directory, or ...). Can this be achieved in some elegant way? The simplest thing that comes to my mind ...