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Appropriate hashbang for Node.js scripts
...e environments. Particularly for me, I'm switching back and forth between OS X and Ubuntu. In the former, Node is installed as node , but in the latter it is nodejs . At the top of my script, I can have:
...
Where can I get a list of Ansible pre-defined variables?
...riables that we can use in playbooks and template files. For example, the host ip address is ansible_eth0.ipv4.address. Googleing and searching the docs I cound't find a list of all available variables. Would someone list them for me?
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AWS Difference between a snapshot and AMI
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@cosbor11 You can't delete the snapshot for an AMI.
– Eric Hammond
Aug 9 '15 at 11:39
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Reliable way for a Bash script to get the full path to itself [duplicate]
...ed by sfstewman, levigroker, Kyle Strand, and Rob Kennedy), that seems to mostly fit my "better" criteria:
SCRIPTPATH="$( cd "$(dirname "$0")" >/dev/null 2>&1 ; pwd -P )"
That SCRIPTPATH line seems particularly roundabout, but we need it rather than SCRIPTPATH=`pwd` in order to properly...
What is __pycache__?
....gitignore) and thus not included.
If you are using cpython (which is the most common, as it's the reference implementation) and you don't want that folder, then you can suppress it by starting the interpreter with the -B flag, for example
python -B foo.py
Another option, as noted by tcaswell, is t...
How to call Android contacts list?
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I'm not 100% sure what your sample code is supposed to do, but the following snippet should help you 'call the contacts list function, pick a contact, then return to [your] app with the contact's name'.
There are three steps to this process.
1. Permissions
Add a permis...
Network usage top/htop on Linux
...ol. Instead of breaking the traffic down per protocol or per subnet, like most tools do, it groups bandwidth by process.
NetHogs does not rely on a special kernel module to be loaded. If there's suddenly a lot of network traffic, you can fire up NetHogs and immediately see which PID is causing ...
Convert pem key to ssh-rsa format
...ubout
in OpenSSH v2 format see:
ssh-keygen -y -f dummy-xxx.pem
Notes
OS and software version:
[user@test1 ~]# cat /etc/redhat-release ; uname -a ; openssl version
CentOS release 6.5 (Final)
Linux test1.example.local 2.6.32-431.el6.x86_64 #1 SMP Fri Nov 22 03:15:09 UTC 2013 x86_64 x86_64 x86_6...
When should we call System.exit in Java
...rly set up) take care of doing all necessary shutdown ceremonies such as closing files, releasing resources etc.
"This method never returns normally." means just that the method won't return; once a thread goes there, it won't come back.
Another, maybe more common, way to quit a program is to simp...
How to run multiple Python versions on Windows
...ted May 19 at 10:54
Piotr Dobrogost
36.5k3232 gold badges209209 silver badges336336 bronze badges
answered Jan 3 '11 at 11:54
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