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Sjoerd's user avatar
Sjoerd's user avatar
Sjoerd's user avatar
Sjoerd
  • Member for 13 years, 9 months
  • Last seen more than a week ago
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2
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About

Sjoerd works as a penetration tester on web applications in Haarlem, The Netherlands.

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8
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8
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Top posts
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answer
10
Combine columns from several files into one
Mar 30, 2019
answer
5
CUPS: Adding printer fails with "Unable to get list of printer drivers: Success"
Jul 3, 2016
question
3
Change order of startup services with systemd
Nov 19, 2016
answer
3
Bash script not working in crontab
Jan 21, 2017
answer
2
Should I remove ICMP Protocol from firewall rules base on security concern?
Mar 27, 2019
answer
2
How can I grep in PDF files?
Jun 28, 2021
question
1
Qemu with binfmt in chroot
Sep 2, 2016
answer
1
Permission problem running touch through ssh command (but not with ssh access)
Mar 27, 2019
answer
1
Return the next 50 characters after a string is found in a file
Apr 9, 2019
answer
1
How do I test for link to a link?
Apr 10, 2019
Top network posts
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323
Is single quote filtering nonsense?
316
Ruby: What is the easiest way to remove the first element from an array?
304
Use email address as primary key?
219
Matching an empty input field using CSS
180
PHP script to render a single transparent pixel (PNG or GIF)