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Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Archive for the ‘*nix’ Category

The strange case of some applications not being able to copy/paste on the Mac OS X clipboard

Posted by jpluimers on 2017/07/19

I’ve not tracked down the cause yet, but these seem to be related:

  1. The Mac OS X build of Atom IO
  2. WinBox v 3.4 WineBottle version from Winbox for Mac in an embedded Wine environment –
  3. pbcopy / pbpaste that allow command-line copy/pasting
  4. none of these being able to copy/paste any more and return error level 1 like terminal – pbcopy exits code 1, no error message – Ask Different but not even running tmux or screen which means this solution does not apply: ChrisJohnsen/tmux-MacOSX-pasteboard: Notes and workarounds for accessing the Mac OS X pasteboard in tmux sessions.
  5. I didn’t have Mouse Keys turned on
  6. Other applications (Chrome, FireFox, TextEdit, Finder, etc) still being able to copy/paste between each other

I’ve “fixed” 4. by doing this as recommended at osx – Copy and Cut sometimes don’t work – Ask Different:

launchctl list | grep

If the pboard daemon is running, then stop and start it. If it’s not running, start it:

launchctl stop
launchctl start

Now 4. works again if I restart each application, 6. still works, but these applications still cannot copy/paste to 1. 2. and 3.

What does work is a full reboot, but that takes a while (especially Chrome re-loading lots of Windows: I need to get more organised here).

It might be that I need to restart each application in 6.



Posted in Apple, Atom, iMac, Internet, Mac, MacBook, MacBook Retina, MacBook-Air, MacBook-Pro, MikroTik, OS X, OS X El Capitan, OS X Maverick, OSX Yosemite, Power User, Routers, Text Editors, tmux | 4 Comments »

SUSE 12.3 – How to auto start services…?

Posted by jpluimers on 2017/07/14

Old (somehow it was blocked in the post queue), but sometimes still relevant for more modern services as, well sysv versus systemd war still are not over yet…

Interesting: systemctl gives flaky results for many services.

chkconfig nfs
chkconfig nfs on

Source: [WayBack] SUSE 12.3 – How to auto start services…?

This is on my system:

revue:~ # systemctl is-enabled shellinabox
shellinabox.service is not a native service, redirecting to systemd-sysv-install
Executing /usr/lib/systemd/systemd-sysv-install is-enabled shellinabox
shellinabox  off
revue:~ # rcshellinabox status
Checking for service shellinabox                                                       unused
● shellinabox.service - LSB: shellinabox
Loaded: loaded (/etc/init.d/shellinabox)
Active: inactive (dead)
Docs: man:systemd-sysv-generator(8)
revue:~ # rcshellinabox start
redirecting to systemctl start shellinabox.service
revue:~ # chkconfig shellinabox
shellinabox  off
revue:~ # chkconfig shellinabox on
revue:~ # chkconfig shellinabox
shellinabox  on


Posted in *nix, openSuSE, Power User, SuSE Linux | Leave a Comment »

Happy #NoEmailDay – The case of the 500-mile email

Posted by jpluimers on 2017/07/07

Good reading on #NoEmailDay 2017: The case of the 500-mile email [WayBack] on how a sysadmin in the mid 1990s found the cause of not being able to send email further than roughly 500 miles.

The exact mile unit doesn’t matter as it was all approximation. Read the FAQ on the 500-mile email [WayBack]



PS: some sendmail tricks from

Read the rest of this entry »

Posted in *nix, *nix-tools, Fun, Power User, sendmail | Leave a Comment »

Learn How to Use ‘fuser’ Command with Examples in Linux

Posted by jpluimers on 2017/07/03

fuser is a simple yet powerful command line utility intended to locate processes based on the files, directories or socket a particular process is accessing.

Source: Learn How to Use ‘fuser’ Command with Examples in Linux [WayBack]

via: Learn How to Use ‘fuser’ Command with Examples in #Linux – Joe C. Hecht – Google+ [WayBack]

Posted in *nix, *nix-tools, Power User | Leave a Comment »

OpenSuSE Tumbleweed: When apache breaks with “Invalid argument: AH00069: make_sock: for address [::]:443”

Posted by jpluimers on 2017/06/28

I had this strange break down of Apache 2 after updating to the most recent openSuSE Tumbleweed in the /var/log/apache2/error_log:

[Wed Jun 28 10:04:19.955991 2017] [ssl:info] [pid 27786] AH01887: Init: Initializing (virtual) servers for SSL
[Wed Jun 28 10:04:19.962449 2017] [ssl:info] [pid 27786] AH01876: mod_ssl/2.4.26 compiled against Server: Apache/2.4.26, Library: OpenSSL/1.0.2k
AH00558: httpd-prefork: Could not reliably determine the server's fully qualified domain name, using Set the 'ServerName' directive globally to suppress this message
[Wed Jun 28 10:04:20.029863 2017] [core:crit] [pid 27786] (22)Invalid argument: AH00069: make_sock: for address [::]:443, apr_socket_opt_set: (IPV6_V6ONLY)
(98)Address already in use: AH00072: make_sock: could not bind to address [::]:443
(98)Address already in use: AH00072: make_sock: could not bind to address
[Wed Jun 28 10:04:20.029935 2017] [mpm_prefork:alert] [pid 27786] no listening sockets available, shutting down

This didn’t give any results for processes having port 443 open:

# /usr/bin/netstat --verbose --all --numeric | grep 443

The commands below didn’t help much either.

So I started digging in port 443 binding:

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Posted in *nix, Apache2, Linux, openSuSE, Power User, SuSE Linux | Leave a Comment »

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