System administrator questions and answers

Answers on Windows, Apple, Android, Unix, Linux, Ubuntu, Raspberry Pi, elementary OS, software, hardware, network and other topics. Only useful solutions!


IP KVM switch, or serial console box for remote admin?

We have a small server farm (11 now, may add more in the future) of HP Proliant DL160 G6s. They all run either Linux (server only, no X11) or VMware ESX. We had intended to get models with iLO, in case BIOS-level remote admin became an issue, but that didn't ....

Waylon Waylon: 02 February 2022

Unix & Linux

Transmit bitrate shown in `iw` is unexpectedly low

> iw dev wlp5s0 link Connected to 00:35:1a:41:2d:cf (on wlp5s0) SSID: eduroam freq: 5240 RX: 59188796 bytes (179767 packets) TX: 351043602 bytes (273799 packets) signal: -59 dBm tx bitrate: 6.0 MBit/s bss flags: short-slot-time dtim period: 1 beacon int: 102 > iw dev wlp5s0 station dump Station 00:35:1a:41:2d:cf (on wlp5s0) ....

Sophie Sophie: 02 February 2022


Offline webreader for iPod Touch

Do you know of a good app for iPod touch that let's me quickly take a bunch of webpages offline that contain some articles I want to read later when I don't have an internet connection? It would be cool if it could also strip out the noise like ads, ....

Alexander Alexander: 02 February 2022


How to disable Microsoft Office's first run wizard

I have a Windows 7 Professional computer in a workgroup. This computer has a mandatory user profile and uses Local GPO to configure the profile on each login. My issue is that I have recently installed Microsoft Office 2013 (subscription version) and I can't seem to turn off the "First ....

Violet Violet: 02 February 2022


How many IPv4 addresses are used for dynamic assignment through ISPs?

From the IPv4 addresses, we have the private addresses (10.x, 172.x, 192.x), localhost addresses (127.x), self-assigned (169.x) multicast and broadcast addresses. From the remaining, I guess a lot of addresses are assigned to large companies, use for web servers etc. How many IPv4 addresses (roughly) are used for dynamic assignment ....

Emilia Emilia: 02 February 2022


How to change the keyboard layout of LTSP clients in 13.10

I am trying to change the keyboard layout for ubuntu 13.10 ltsp clients. I edited /var/lib/tftpboot/ltsp/i386/lts.conf (which was empty after the install). What works is de/german, but this is the keyboard setting that the system was installed with: XKBLAYOUT=de I can also change the file to XKBLAYOUT=us This changes all ....

Amelia Amelia: 02 February 2022


Mount Outlook Shared Folders In Explorer?

My workplace uses Shared Folders in Outlook to share documents, and I would like to view or mount them in Windows Explorer instead of having to view them through Outlook 2010. They have an Exchange 2010 server. Is this possible? I will provide more details if needed. ....

Henry Henry: 02 February 2022

Unix & Linux

Eclipse quick switch windows does not have focus, does not work without mouse move

Using Eclipse Neon on Linux Mint with Xfce and "focus follows mouse" enabled, I try to use "quick switch windows" or "next editor" (CTRL+E or CTRL+F6) in the default bindings. In both cases, weird things happen to the keyboard focus. With "quick switch windows" the popup dialog appears at the ....

Camila Camila: 02 February 2022


ROS melodic instalation for Ubuntu 20.04

A lot of packages are still not supported in ros noetic, so i was trying to build melodic from source in ubuntu 20.04. While following instructions from here (, i got stuck in this command rosdep install --from-paths src --ignore-src --rosdistro melodic -y The errors i got were:- ERROR: the ....

Stella Stella: 02 February 2022


Nginx,Uwsgi and Django App Not Found

I have configured Nginx with uWSGI and Django on CentOS. Django Directory(contains all my django app): /home Django Project Directory: /home/hdblog /home/ contains below: import os, sys sys.path.append('/home') os.environ = 'hdblog.settings' import django.core.handlers.wsgi application = django.core.handlers.wsgi.WSGIHandler() And i'm using below command: /etc/init.d/uwsgi --socket --master --workers 2 --harakiri 30 --disable-logging ....

Charlotte Charlotte: 02 February 2022