TILs - Fueling Curiosity, One Insight at a Time

At Codemancers, we believe every day is an opportunity to grow. This section is where our team shares bite-sized discoveries, technical breakthroughs and fascinating nuggets of wisdom we've stumbled upon in our work.

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Codemancers
even if you have configured a gitlab-runner for gitlab-ci and the runner’s ssh keys or api keys are used to clone the repo into the runners environment, if the build is triggered by a person who is not the member of the project you will get below error.

Code

fatal: remote origin already exists.
 Clean repository
 remote: You are not allowed to download code from this project.
 fatal: unable to access 'https://gitlab-ci-token:[MASKED]@example.gitlab.com/project.git/': The requested URL returned error: 403
 ERROR: Job failed: exit code 1


The error is slightly miss leading as it says gitlab-ci-token in it, but it is occurred due to the triggering entity not being member of the project. Even if the person who triggered the project has owner access in Gitlab and is not a member of the project, you will still see this error.
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Codemancers
git log has grep.

git log --grep=“something something”

also can do some cut head etc to read the whole commit(which generally is the goal) at once
$git log --grep=“something something” | head -1 | cut -d” ” -f2 | xargs -I{} git show {}
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Codemancers
to debug statsd servers, this is a helpful command, echo "your.statsd.counter:1|c" | nc -u -w 1 your.statsd.host.com 8125
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Codemancers

Code

+----------+---------+---------------------+------------------------+-------------+
|          | context | matched docs scored | matched docs in result | exact match |
+----------+---------+---------------------+------------------------+-------------+
| must     | query   | yes                 | yes                    | yes         |
| filter   | filter  | no                  | yes                    | yes         |
| should   | query   | yes                 | yes                    | no          |
| must_not | filter  | no                  | no                     | yes         |
+----------+---------+---------------------+------------------------+-------------+


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Codemancers
mac set custom default folder for screenshots defaults write com.apple.screencapture location /path/to/Screenshots
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Codemancers
This site https://imageonline.co/ is very handy to manipulate images online without searching for imagemagick commands
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Codemancers
$stdout.sync = true

this helps if you are trying to write a tool which pipes to another command. the other command will be able to process the output immediately, as no buffer and periodic flush is involved.
eg. cat rules > ruby rule_engine.rb | python calculate_tax.py

Also ARGF, sort of like a streaming STDIN. pretty cool, cause of the streaming.
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Codemancers
cat k8s.yaml | kubectl apply -f-
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Codemancers
cat k8s.yaml | kubectl apply -f-
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Codemancers
cat k8s.yaml | kubectl apply -f-
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Codemancers
cat k8s.yaml | kubectl apply -f-

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