Search found 384 matches
- Thu Dec 17, 2020 12:00 am
- Forum: Knowledge Base
- Topic: PHP Fatal error: "Cannot declare class" (due to symlink)
- Replies: 0
- Views: 11732
PHP Fatal error: "Cannot declare class" (due to symlink)
[PROBLEM] I ran into the following error message when I tried to make CollectiveAccess (CA) available in another folder that was merely a symbolic link to the previous installation: PHP Fatal error: Cannot declare class WidgetManager, because the name is already in use in /var/www/providence-ca/app...
- Tue Dec 08, 2020 3:02 pm
- Forum: HowTo's
- Topic: VIM: indent multiple files at once
- Replies: 0
- Views: 10144
VIM: indent multiple files at once
I often use vim to quickly beautify / pretty-print structured text - like XML or programming code, etc: In VIM this is: gg =G gg: Go to top =: indent G: until bottom. In order to do this with multiple files, do the following: 1) Open the files you want to indent in tabs. For example all XMLs in the ...
- Tue Nov 03, 2020 2:04 pm
- Forum: HowTo's
- Topic: Manually force date by ntpd instead of ntpdate
- Replies: 1
- Views: 9156
Re: Manually force date by ntpd instead of ntpdate
Short update (Debian based systems, including *Ubuntu): 1) You need to stop the NTP service before $ systemctl stop ntp 2) You don't need to provide a timeserver Since the default ntp configuration on a system contains a list of timeservers, it also works without providing any server: $ ntpd -gq If ...
- Thu Oct 22, 2020 12:56 am
- Forum: HowTo's
- Topic: Howto network benchmark with "iperf"
- Replies: 1
- Views: 6589
HowTo: Test / verify jumbo frames (MTU 9000)
Output 10 intermediate test results and the MTU size at the end: $ iperf -c SERVER1 -i1 -t 10 -m Here's an example what this could look like: ------------------------------------------------------------ Client connecting to zehn2, TCP port 5001 TCP window size: 325 KByte (default) ------------------...
- Thu Oct 22, 2020 12:46 am
- Forum: HowTo's
- Topic: Howto network benchmark with "iperf"
- Replies: 1
- Views: 6589
Howto network benchmark with "iperf"
Here's an excellent article by the Thomas Krenn crew about benchmarking network performance using iperf (German). Here's a short summary of how to quickly run a TCP test between 2 machines: Server1: Start listening. $ iperf -s ------------------------------------------------------------ Server liste...
- Tue Oct 20, 2020 11:17 pm
- Forum: Knowledge Base
- Topic: Netgear R7800: "please upgrade to a version 4 or higher..."
- Replies: 0
- Views: 10438
Netgear R7800: "please upgrade to a version 4 or higher..."
[PROBLEM] On a freshly bought, " Netgear Nighthawk X4S AC2600 R7800 ", I was surprised to get the following message in a Firefox 81.0 on Xubuntu 18.04: Please upgrade to a version 4 or higher browser so that you can use this setup tool (and see lots of great sites on the Internet!) ...con...
- Mon Oct 12, 2020 11:20 pm
- Forum: Knowledge Base
- Topic: PHP Composer
- Replies: 0
- Views: 8734
PHP Composer
[PROBLEM] Trying to update packages using composer: $ composer update Throws the following error message: Loading composer repositories with package information [Composer\Downloader\TransportException] The "https://packagist.org/packages.json" file could not be downloaded: SSL operation f...
- Wed Sep 30, 2020 3:17 am
- Forum: Brainstorming & Smalltalk
- Topic: Stuff to print on T-Shirts
- Replies: 32
- Views: 91976
Re: Stuff to print on T-Shirts
I don't rest:
I prepare.
I don't filter:
I analyze.
Correct. But wrong.
- Tue Sep 15, 2020 6:40 pm
- Forum: Knowledge Base
- Topic: Huawei HA35-22: External antenna for LTE-only
- Replies: 0
- Views: 9259
Huawei HA35-22: External antenna for LTE-only
[QUESTION] The default hybrid modem/router supplied by Magenta (T-Mobile) in Austria is a Huawei HA35-22. On the back it has 2 external antenna connectors (SMA female) under a plastic cover. These connectors are neither shown nor mentioned in its user manual. Which signal would these antennas ampli...
- Mon Sep 07, 2020 5:16 pm
- Forum: Knowledge Base
- Topic: Huge xsession-errors: "video mixer rendering failure..."
- Replies: 0
- Views: 8375
Huge xsession-errors: "video mixer rendering failure..."
[PROBLEM] My ~/xsession-errors file has grown to several gigabytes size, mostly flooded with the following message: vdpau_chroma filter error: [00007fc82c01c4e0] video mixer rendering failure: An invalid handle value was provided.vdpau_chroma filter error: video mixer attributes failure: An invalid...
- Mon Aug 10, 2020 5:17 pm
- Forum: Knowledge Base
- Topic: VLC: Cannot resolve xxx port yyy : Name or service not known
- Replies: 0
- Views: 7894
VLC: Cannot resolve xxx port yyy : Name or service not known
[PROBLEM] Trying to start VLC from commandline to have its web-interface listen to a certain IP/port: $ vlc --intf http --http-host localhost:9090 (This is according to VLC's official HTTP-requests documentation for this) ...gives me the following error message: VLC media player 3.0.8 Vetinari (rev...
- Tue Aug 04, 2020 9:11 pm
- Forum: Knowledge Base
- Topic: Doxygen: "dot not found"
- Replies: 0
- Views: 9266
Doxygen: "dot not found"
[PROBLEM] Running Doxygen on Debian 9 fails with an error message that says something like: dot: not found (I forgot to copy the original error message...) [SOLUTION] "dot" is an executable included in the GraphViz package (which seemed to be missing and not listed as dependency). So: $ a...
- Sun Jul 26, 2020 4:28 pm
- Forum: HowTo's
- Topic: Debian: Disable IPv6
- Replies: 2
- Views: 9904
Useful IPv6 information
Here are some nice links with information about IPv6:
- Fri Jun 12, 2020 6:07 pm
- Forum: HowTo's
- Topic: Debian-based system: Verify all packages (integrity)
- Replies: 0
- Views: 8023
Debian-based system: Verify all packages (integrity)
Code: Select all
$ apt install debsums
Code: Select all
$ sudo debsums -s
Links:
https://blog.sleeplessbeastie.eu/2015/0 ... -packages/
- Tue Jun 09, 2020 7:16 pm
- Forum: Knowledge Base
- Topic: http over SSH port forward = weird characters
- Replies: 0
- Views: 7586
http over SSH port forward = weird characters
[PROBLEM] I try to open a website over SSH port-forwarded SSL , and get a reply but it's just some weird unicode blocks. The setup is as follows: Localhost: My local PC "Server1": My proxy server "Server2": 3rd party server, running https website - but restricted access to IP of...