I’m in a bit of an interesting situation where I have a Python script that can theoretically be run by a variety of users with a variety of environments (and PATHs) and on a variety of Linux systems. I want this script to be executable on as many of these as possible without artificial restrictions. Here are some known setups:
Is there a straightforward way to find all the sparse files on my system, or in a particular directory tree?
The default prompt will be
When I boot, PulseAudio defaults to sending output to Headphones. I’d like it to default to sending output to Line Out. How do I do that?
How can I write the same content to many text files by using cat or echo in only one command?
I had a good running installation of Debian Jessie, but then I ran apt-get update && apt-get upgrade && apt-get dist-upgrade.
Trying to understand the behaviour of the environment in Linux (Ubuntu 13.04 concretely), I’ve find different situations where setting envirionment variables are used or defined for/in different contexts. For example, if I check, locale, I get:
I have two arrays like this:
If I do watch cat /proc/sys/kernel/random/entropy_avail I see that my systems entropy slowly increases over time, until it reaches the 180-190 range at which point it drops down to around 120-130. The drops in entropy seem to occur about every twenty seconds. I observe this even when lsof says that no process has /dev/random or /dev/urandom open. What is draining away the entropy? Does the kernel need entropy as well, or maybe it is reprocessing the larger pool into a smaller, better quality pool?