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Questions tagged [system-administration]

Use this tag for asking about programs you have written to perform system-administration tasks. Non-programming questions about system administration are off-topic for Stack Overflow and should not be asked here.

983 questions
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How can I show file sizes with commas when getting a directory listing with 'ls -l'?

You can do 'ls -l' to get a detailed directory listing like this: -rw-rw-rw- 1 alice themonkeys 1159995999 2008-08-20 07:01 foo.log -rw-rw-rw- 1 bob bob 244251992 2008-08-20 05:30 bar.txt But notice how you have to slide your finger…
dreeves
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What would be the simplest system to send sms from linux server?

What would be the simplest system to send sms from linux server? It`s a Debian system. There would be not much SMSes. What hardware and software to use? Maybe use some SMS sending service?
Kazimieras Aliulis
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1 answer

Only allow certain countries traffic access specific page

I am using --with-http_geoip_module for identify traffic. There are some pages that I only want certain country to access. Here is configuration: For http http{ geoip_country /usr/share/GeoIP/GeoIP.dat; # the country IP database map…
dev-jim
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How to install libpython2.7.so

I have installed Python 2.6.6 at [17:50:21 root@data.dev:~]# which python /usr/local/bin/python also Python 2.7.6 at [17:51:12 root@data.dev:~]# which python2.7 /usr/local/bin/python2.7 But libpython2.7.so is missing [17:48:52 root@data.dev:~]#…
roy
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Why use Apache over NGINX/Cherokee/Lighttpd?

Apache has been the de facto standard web server for over a decade, but recent years have brought us web servers that consume less RAM and handle many more requests per second using fewer threads and asynchronous i/o. In my opinion, I also find the…
codysoyland
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1 answer

what is the proper way to test NFS performance

I'm given a project where the only objective is to monitor a network's NFS performance. I know there's a bunch of open source tools out there, but still I would like to get the basic idea behind in order to better tweak those around. So the network…
fy_iceworld
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8 answers

Sniffing network traffic for signs of viruses/spyware

How can I connect a system to a network and sniff for virus/spyware related traffic? I'd like to plug in a network cable, fire up an appropriate tool sand have it scan the data for any signs of problems. I don't expect this to find everything, and…
DrStalker
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5 answers

How to export a variable in Bash

I need to set a system environment variable from a Bash script that would be available outside of the current scope. So you would normally export environment variables like this: export MY_VAR=/opt/my_var But I need the environment variable to be…
mbrevoort
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Postgresql 9.3 on Centos 7 with custom PGDATA

I am trying to set up Postgresql 9.3 server on Centos 7 (installation via yum) inside a custom directory, which in my case is an encrypted partition (/custom_container/database) that is mounted on startup. For a certain reason Postgresql does not…
Vitaly Stanchits
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Chef correct way to load new rpm and install package

I am trying to install the latest version of php on a centos box and am struggling. The cookbook i have been looking at is the opscode one: https://github.com/opscode-cookbooks/php It doesnt look like i can install php 5.5 using that. To install…
Marty Wallace
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4 answers

Update website with a single command (git push) instead of FTP drag and dropping

Situation: I have a local copy of a website I have a server that I have SSH access to What do I want to do? Commit locally until I'm happy with my code Make branches locally Have one master branch that is the one that should be pushed to the…
Wolfr
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Can a script be used as an interpreter by the #! hashbang line?

I'm trying to write a bash script which will behave as a basic interpreter, but it doesn't seem to work: The custom interpreter doesn't appear to be invoked. What am I doing wrong? Here's a simple setup illustrating the problem: /bin/interpreter:…
Tom Rees
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What is a crashloop?

I'm reading Google's Site Reliability Engineering book and ran across the word crashloop which I've never heard before and have not been able to locate a definition "If a task tries to use more resources than it requested, Borg kills the task and…
Taylor Clark
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Sender and receiver to transfer files over ssh on request?

I created a program that iterates over a bunch of files and invokes for some of them: scp user@host: However, in my case, there may be thousands of small files that need to transferred, and scp is opening a new ssh connection for…
Bruno De Fraine
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Hyperledger Fabric Composer - restricting access rights of system administrators

My question is on access control in hyperledger fabric composer. Assume you have a business network, in which you have the following participants: Sellers (Potential) Buyers A seller is an employee of a company that sells products to a buying…
steady_progress
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