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1500 questions
67
votes
3 answers

nginx set variable in location

I am trying to optimize my nginx configs, so it would be possible to set one variable, and all location paths would update automatically. I have four lines in question: server_name php.domain.com; root /srv/web/vhosts/php/web; error_log…
Bogdan Kuštan
  • 773
67
votes
6 answers

Display output with Ansible

I have a Ansible play for PGBouncer that displays some output from a stats module built into PGBouncer. My issue is that when Ansible prints the output to the terminal it mangles the newlines. Instead of seeing ---------- | OUTPUT | ---------- I…
mjallday
  • 942
67
votes
10 answers

Unique Features of bash compared to zsh

I have been a zsh user for quite some time (before that tcsh and before that csh). I am quite happy with it, but was wondering if there are any compelling features of bash that do not exist in zsh. And conversely, are there zsh features which do not…
Tim
  • 1,909
67
votes
10 answers

Can I run a cron job more frequently than every minute?

Is it possible to run a cron job every 30 seconds without a sleep command?
user15336
  • 823
67
votes
4 answers

Drawbacks of mounting a filesystem with noatime?

Having every file be updated just when accessing them sounds like a waste. What's the catch with mounting a file system with the noatime option. What kind of applications/servers relies on the access time?
nos
  • 2,518
67
votes
7 answers

Prevent Windows Server 2012 from forcing a reboot after updates

I have a domain controller with Windows Server 2012 on it. After updates, the server does not reboot immediately. However if I remote into the server I will be presented with a countdown for a reboot. The only options are to restart now or to close…
Bryansix
  • 815
67
votes
6 answers

Why do ethernet cables have 8 wires?

This might seem a stupid question but why do Ethernet cables have 8 wires? Cat5 cables were just using 4 of the 8 wires, so only 4 are actualy 'needed'. Why not 12 or 16 wires?
ProgrammerAtWork
  • 773
67
votes
7 answers

Is there a way to validate /etc/crontab’s format?

I prefer to stick scheduled tasks in /etc/crontab so I can see at a glance what's scheduled to run, regardless of which user the task runs as. The only gotcha is that the format isn't validated on save, unlike crontab -e - so a stray character can…
Ben K.
  • 2,489
67
votes
2 answers

Why does Heroku warn against "naked" domain names?

I ran across this page in the Heroku docs... Naked domains, also called bare or apex domains, are configured in DNS via A-records and have serious availability implications when used in highly available environments such as massive on-premise…
Agvorth
  • 2,449
67
votes
9 answers

How to split a PEM file

Note : This is not really a question because I already found the answer but since I didn't find it easily here I will post it so that it can benefit others. Question : How to read a concatenated PEM file as the one used by apache/mod_ssl directive…
Cerber
  • 1,291
67
votes
2 answers

How can I configure nginx locations to share common configuration options?

How can i configure a shared config block for a set of locations? location / { proxy_pass http://127.0.0.1:9000/; proxy_redirect off; proxy_set_header Host $http_host; …
netbrain
  • 853
67
votes
11 answers

What can cause slow ssh session?

I ssh on remote host but terminal performance is poor. Symbols I am typing are not shown immediately, but with some delay. Sometimes two symbols are shown at one time after delay.
lexsys
  • 2,993
67
votes
7 answers

Best Practices in Username Standards: Avoiding Problems

I'm interested in finding out what people's experiences with standard usernames is. I've always been in places that used {firstInitial}{lastname} (sometimes with a length-limit). Now I've users that want {firstname}.{lastname} - and now it comes up…
Mei
  • 4,620
67
votes
3 answers

How to ignore an error in Powershell and let it continue?

I am trying to see if a process is running on multiple servers and then format it into a table. get-process -ComputerName server1,server2,server3 -name explorer | Select-Object processname,machinename Thats the easy part - When the process does not…
Jake
  • 2,388
67
votes
4 answers

How to manage my .ssh/known_hosts file

I run an Ubuntu desktop with a bunch of virtual servers in Virtual Box to test stuff out, etc. In the past I have also been connecting to other kinds of remote VPS Linux boxes. Currently my .ssh/known_hosts file has a whole bunch of keys in it, most…
Luke
  • 3,916
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