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I am trying to get the second last value in each row of a data frame, meaning the first job a person has had. (Job1_latest is the most recent job and people had a different number of jobs in the past and I want to get the first one). I managed to get the last value per row with the code below:

first_job <- function(x) tail(x[!is.na(x)], 1)

first_job <- apply(data, 1, first_job)

I did this tampermonkey script to parse my gmail inbox items and add a button linking to our Redmine Issue Tracker, so I can open the thread without having to open the email. This button I added, immediately open a new tab and switch focus to it.

It works fine, except that every time I click the button, it also opens the email on the Gmail page/browser tab. To fix this, I added a setTimeout(function() { window.history.go(-1); }, 1000) to jump back after opening the link.

The problem is that this does not allow me to open several issues at once, i.e., by holding the Ctrl+Click because it opens the email and jumps back (big flickering).

How could I stop the email from opening when I click on the button I added?

I tried setting the timeout to 0, i.e., setTimeout(function() { window.history.go(-1); }, 0), but this does not helps because GMail opens the email both, in the current browser tab/page and in a new page (along with my Redmine page), then I have 2 new pages opened when I click my button with Ctrl+Click.

1. Is there something I could add to setTimeout(..., 0) which could cancel the email opening before it starts? (So I can open several tabs at once by Holding the Ctrl button)
2. Or is there a way to remove the click event from opening the email when I click on the button I just added? (So I can open several tabs at once by Holding the Ctrl button)

thanks for reading!

I connected an adafruit neopixel to my Raspberry Pi Zero (1. generation) and got them working with test python code.

As the next step I wanted to generate a webpage with buttons controlling the neopixel. I mostly followed this tutorial https://www.hackster.io/mjrobot/iot-controlling-a-raspberry-pi-robot-over-internet-6988d4#toc-step-5--installing-the-lighttpd-webserver-8

At first I got a simple bash cgi script running, which created and wrote the current time into a file. Switching to a python cgi script went fairly easy without changing any configurations file, which left me wondering. But running the test python code from the html is simply not working. As with previous problems I started reading and tinkering but it seems that any solution I tried, doesn't work for me.

I can't recount (working and reading the past days on this) everything I did but I added www-data to the sudoer group, I created a file called 010_www-data-nopasswd in the /etc/sudoers.d directory with www-data ALL=(ALL) NOPASSWD: ALL as content.

I added www-data to the groups gpio, i2c and spi. I ran sudo visudo and added www-data ALL=(ALL:ALL) ALL and www-data ALL = NOPASSWD: /var/www/lighttpd/cgi-bin/neopixelTest.py and still it won't work.

I tried bash cgi script to call the test python script with sudo and it works! So I think it boils down to this.

I've read, that in the config files there is a line like ".py" => "/usr/bin/python" telling lighty to call /usr/bin/python for cgi scripts ending with .py, so I came up with the idea to put sudo into this line, so that basically every python script gets run as sudo. Really not a good thing, but I think this whole project is more quick and dirty and better than running lighty as root. But I can't find this line.

This is my /etc/lighttpd/lighttpd.conf file.

Background

I am bringing up a Linux kernel via Yocto for some vendor-provided embedded hardware. I have configured the image to boot via fitImage with an initramfs and no rootfs (there is persistent storage but this is entirely for userspace application use). Think PXE live image and you won't be far off.

Things have been going well until my initramfs image crossed the ~128MB mark. Below this and everything boots as expected and all drivers are bound without issue. Above this mark and the kernel still boots but many drivers, though not all, are not bound. This is quite perplexing as all drivers are statically built into the kernel (no modules are used on this platform). Unfortunately, one of these modules runs the platform watchdog which causes entirely predictable reboots.

Thus far I have verified that all of the symbols are present in the vmlinux image:

i am currently planning to register and utilize the git repository in redmine.

Because redmine is not managed through remote url, there was a problem that you had to git clone it and leave the fetch periodically.

It could have been handled simply through the git credential store, but I decided there was a security problem, so I encrypted the netrc file with the netrc.gpg file and then made the git-credential-netrc file fetch through git.credential = netrc -v.

These tasks were written after seeing the reference materials below.

1. is-there-a-way-to-cache-github-credentials-for-pushing-commits

2. whats-the-best-encrypted-git-credential-helper-for-linux

In particular, I referred to the reference number 1, and I also checked that the shell script works normally when it is turned locally after making the shell script as below.

• update-git-repo.sh

I keep getting this error when trying to send test email in Redmine

I have seen two different ways to specify environment variables when execute bundle exec. Which one is correct on Linux? Maybe both? I am looking for general answer, I know that in this particular case (updating Redmine) specifying RAILS_ENV may be even unnecessary.

I did upgrade my Redmine (version 4.1.0) to last version (4.1.1.7) through THIS instruction. All was ok until i wanted to migrate database. Once i entered sudo ruby bin/rake db:migrate RAILS_ENV=production' command the following error occured :

Activating bundler (~> 2.1)
Could not find 'bundler' (~> 2.1) among 5 total gem(s)
To install the version of bundler this project requires, run gem install bundler -v '~> 2.1'

Then i try gem install bundler -v '~> 2.1' :

Fetching: bundler-2.2.5.gem (100%)
Successfully installed bundler-2.2.5
Parsing documentation for bundler-2.2.5
Installing ri documentation for bundler-2.2.5
Done installing documentation for bundler after 46 seconds
Done installing documentation for bundler after 46 seconds

and ran sudo ruby bin/rake db:migrate RAILS_ENV=production again but same error occured.

My platform is Centos 7

Thanks