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Technical help interspersed with light humor. Hope my videos will help you today. 

Please support me on Patreon: https://www.patreon.com/roelvandepaar

See https://au.linkedin.com/in/roelvandepaar for my skills.

May God bless you always!

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Technical
Help
Assistance
Software
Programming
Roel Van de Paar
Ubuntu
3D Printing
Solutions
Roel
Development
Science
Windows
Linux
Unix
Mac
Apple
C++
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Python
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Featured video

Error "Something unexpected went wrong with this url" in Outlook (2 Solutions!!)

Roel Van de Paar

86,559 views

4 years ago

Videos
Roel Van de Paar
Open applications with Runtime.exec() on OS X
00:01:47
Open applications with Runtime.exec() on OS X

35 views

3 hours ago

Roel Van de Paar
Create table table if not exists else alter table (2 Solutions!!)
00:02:32
Create table table if not exists else alter table (2 Solutions!!)

63 views

8 hours ago

Roel Van de Paar
Custom helper class not loading in Laravel 4
00:02:13
Custom helper class not loading in Laravel 4

65 views

14 hours ago

Roel Van de Paar
Setting an Initial VisualState in WPF (2 Solutions!!)
00:02:59
Setting an Initial VisualState in WPF (2 Solutions!!)

116 views

19 hours ago

Roel Van de Paar
Array instead of SimpleXMLElement Object in array PHP? (2 Solutions!!)
00:02:34
Array instead of SimpleXMLElement Object in array PHP? (2 Solutions!!)

121 views

1 day ago

Roel Van de Paar
jQuery issues (Safari/Chrome) with smooth scroll
00:02:08
jQuery issues (Safari/Chrome) with smooth scroll

109 views

1 day ago

Roel Van de Paar
Where is private key when using SSL stored? (2 Solutions!!)
00:03:06
Where is private key when using SSL stored? (2 Solutions!!)

109 views

1 day ago

Roel Van de Paar
Unable to update Laravel 4 with Composer (Update: bug?) (3 Solutions!!)
00:02:37
Unable to update Laravel 4 with Composer (Update: bug?) (3 Solutions!!)

101 views

1 day ago

Roel Van de Paar
Add anchor to links using jquery (2 Solutions!!)
00:02:25
Add anchor to links using jquery (2 Solutions!!)

100 views

1 day ago

Roel Van de Paar
Why can't i change the hovered row backcolor in jqGrid?
00:01:25
Why can't i change the hovered row backcolor in jqGrid?

114 views

2 days ago

Roel Van de Paar
Inno Setup Script - running exe before installing (2 Solutions!!)
00:02:15
Inno Setup Script - running exe before installing (2 Solutions!!)

98 views

2 days ago

Roel Van de Paar
How can I notify property of parents that property of child is changed? (2 Solutions!!)
00:03:10
How can I notify property of parents that property of child is changed? (2 Solutions!!)

113 views

2 days ago

Unix and Linux-1
Roel Van de Paar
Unix & Linux: How to switch between users on one terminal? (9 Solutions!!)
00:04:56
Unix & Linux: How to switch between users on one terminal? (9 Solutions!!)

5,723 views

4 years ago

Roel Van de Paar
Unix & Linux: How to correctly add a path to PATH? (11 Solutions!!)
00:08:59
Unix & Linux: How to correctly add a path to PATH? (11 Solutions!!)

2,238 views

4 years ago

Roel Van de Paar
Unix & Linux: How to copy files from one machine to another using ssh? (4 Solutions!!)
00:03:04
Unix & Linux: How to copy files from one machine to another using ssh? (4 Solutions!!)

2,659 views

4 years ago

Roel Van de Paar
Unix & Linux: How to install a deb file, by dpkg -i or by apt? (7 Solutions!!)
00:04:24
Unix & Linux: How to install a deb file, by dpkg -i or by apt? (7 Solutions!!)

1,807 views

4 years ago

Roel Van de Paar
Unix & Linux: How do I get the size of a directory on the command line? (16 Solutions!!)
00:07:25
Unix & Linux: How do I get the size of a directory on the command line? (16 Solutions!!)

445 views

4 years ago

Roel Van de Paar
Unix & Linux: How is my domainname determined? (2 Solutions!!)
00:02:02
Unix & Linux: How is my domainname determined? (2 Solutions!!)

300 views

4 years ago

Roel Van de Paar
Unix & Linux: Remind syntax combining a weekly event with a time range
00:01:39
Unix & Linux: Remind syntax combining a weekly event with a time range

131 views

4 years ago

Roel Van de Paar
Unix & Linux: Can Nautilus-Actions Configuration Tool be used with Nemo file browser in Cinnamon?
00:01:25
Unix & Linux: Can Nautilus-Actions Configuration Tool be used with Nemo file browser in Cinnamon?

65 views

4 years ago

Roel Van de Paar
Unix & Linux: Defrag range ioctl not supported in this kernel, please try without any options
00:01:40
Unix & Linux: Defrag range ioctl not supported in this kernel, please try without any options

84 views

4 years ago

Roel Van de Paar
Unix & Linux: Double square brackets for FreeBSD (3 Solutions!!)
00:03:06
Unix & Linux: Double square brackets for FreeBSD (3 Solutions!!)

58 views

4 years ago

Roel Van de Paar
Unix & Linux: xterm window positioning
00:01:37
Unix & Linux: xterm window positioning

93 views

4 years ago

Roel Van de Paar
Unix & Linux: Can't delete a file starting with a '-' (2 Solutions!!)
00:02:22
Unix & Linux: Can't delete a file starting with a '-' (2 Solutions!!)

140 views

4 years ago

Ubuntu
Roel Van de Paar
Ubuntu: Error: You need to load the kernel first in Grub
00:02:40
Ubuntu: Error: You need to load the kernel first in Grub

45,028 views

5 years ago

Roel Van de Paar
Ubuntu: Blank screen, blinking cursor on boot
00:02:53
Ubuntu: Blank screen, blinking cursor on boot

28,994 views

5 years ago

Roel Van de Paar
Ubuntu: SYSLINUX: No DEFAULT or UI configuration directive found!
00:02:40
Ubuntu: SYSLINUX: No DEFAULT or UI configuration directive found!

19,805 views

5 years ago

Roel Van de Paar
Ubuntu: Error when installing: "unable to find a medium containing a live file system"
00:04:03
Ubuntu: Error when installing: "unable to find a medium containing a live file system"

14,284 views

5 years ago

Roel Van de Paar
Ubuntu: SSH Permission denied (publickey)
00:06:54
Ubuntu: SSH Permission denied (publickey)

12,318 views

5 years ago

Roel Van de Paar
Ubuntu: Error for Makefile: "make: *** No targets specified and no makefile found. Stop."
00:02:32
Ubuntu: Error for Makefile: "make: *** No targets specified and no makefile found. Stop."

11,314 views

5 years ago

Roel Van de Paar
Ubuntu: Kernel Panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
00:02:18
Ubuntu: Kernel Panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)

11,269 views

5 years ago

Roel Van de Paar
Ubuntu: Cannot connect to postgresql on port 5432
00:08:13
Ubuntu: Cannot connect to postgresql on port 5432

11,137 views

5 years ago

Roel Van de Paar
Ubuntu: error: file '/grub/i386-pc/normal.mod' not found
00:03:15
Ubuntu: error: file '/grub/i386-pc/normal.mod' not found

9,748 views

5 years ago

Roel Van de Paar
Ubuntu: How to make read-only file system writable?
00:02:55
Ubuntu: How to make read-only file system writable?

9,224 views

5 years ago

Roel Van de Paar
Ubuntu: SSH Public Key - No supported authentication methods available (server sent public key)
00:04:21
Ubuntu: SSH Public Key - No supported authentication methods available (server sent public key)

9,063 views

5 years ago

3D Printing
Roel Van de Paar
3D Printing: How do the E commands in G-code work, exactly?
00:01:28
3D Printing: How do the E commands in G-code work, exactly?

5,746 views

5 years ago

Roel Van de Paar
3D Printing: Is cutting the arm off the Z-axis switch a good idea? (3 Solutions!!)
00:02:16
3D Printing: Is cutting the arm off the Z-axis switch a good idea? (3 Solutions!!)

2,150 views

5 years ago

Roel Van de Paar
3D Printing: How to offset my probe so it's not hanging off the bed at 0, 0 position when printing?
00:03:31
3D Printing: How to offset my probe so it's not hanging off the bed at 0, 0 position when printing?

2,058 views

5 years ago

Roel Van de Paar
3D Printing: Z axis top brackets, of P3Steel, differ between v1.x/2.x and v4 (2 Solutions!!)
00:03:14
3D Printing: Z axis top brackets, of P3Steel, differ between v1.x/2.x and v4 (2 Solutions!!)

1,764 views

5 years ago

Roel Van de Paar
3D Printing: RCBugFix what is it?
00:01:12
3D Printing: RCBugFix what is it?

746 views

5 years ago

Roel Van de Paar
3D Printing: Marlin - slowing down print speed
00:01:34
3D Printing: Marlin - slowing down print speed

1,075 views

5 years ago

Roel Van de Paar
3D Printing: Marlin Adjusting feedrate (3 Solutions!!)
00:02:07
3D Printing: Marlin Adjusting feedrate (3 Solutions!!)

3,355 views

5 years ago

Roel Van de Paar
3D Printing: Endstops will not trigger using Marlin Firmware
00:02:03
3D Printing: Endstops will not trigger using Marlin Firmware

2,976 views

5 years ago

Roel Van de Paar
3D Printing: How can I set the position in Pronterface? (2 Solutions!)
00:01:29
3D Printing: How can I set the position in Pronterface? (2 Solutions!)

967 views

5 years ago

Roel Van de Paar
3D Printing: Which type of extrusion problem? (3 Solutions!!)
00:03:08
3D Printing: Which type of extrusion problem? (3 Solutions!!)

354 views

5 years ago

Roel Van de Paar
3D Printing: Wanhao duplicator i3 print bed support warped
00:02:04
3D Printing: Wanhao duplicator i3 print bed support warped

383 views

5 years ago

Roel Van de Paar
3D Printing: Large flat ABS print curling during cooldown
00:02:14
3D Printing: Large flat ABS print curling during cooldown

760 views

5 years ago