Along with rewrite and proxy, redirect is another similar term.
Redirect: give user a new adress (User knows)
Rewrite and proxy both can map user requests to internal resources. (User does not know)
Rewrite is more flexible to map requests, wheras proxy is more straightforward.
Content about it may be added in the future!
Sometimes, RStudio server always stuck in the loading page, especially exiting abnormally in last run. Use systemctl restart rstudioserver or restart docker do not solve the problem. The reason is that Rstudio automatically resume the last running environment. However, when something wrong, Rstudio always try to resume a bad environment in a dead loop.
Solution:
Delete cached session files.
~/.local/share/rstudio/session (update version)
~/.rstudio/session (old version)
Nomenclature of gene has a long history.
Take an id with the name. That will guarantee most gene matched.
Last time, I was reading three large tab delimited files into R (4.0.X) using read.table().
1st: 1.2M rows
2nd: 0.8M rows
3rd: 0.3M rows
The function did not fully parse the first file, and only 0.3M rows were susscefully read into memory. No problem was identified in the latter two files. I did not find any support documentation to elucidate the n_max behavior.
read.delim and read_delim(tidyverse) did fully parse the files.
read.table is NOT recommended!
Excel automatically formats characters looks like date or time.
Some IDs, such as PDB ID and gene name, contain characters looks like date. However, Excel is the most efficient tools to quickly view the dataset, especially when datasets is small (<10000 rows).
A practical way is to open a blank Excel file, import the data file, and specify fields as text.
Among these popular Cloud Drive service providers, Dropbox is the only one offering official Linux client. However, errors wll pop up when starting the service. The reason is some dependencies missing in Ubuntu 20.04.
Solution:
1 | sudo apt install libc6 libglapi-mesa libxdamage1 libxfixes3 libxcb-glx0 libxcb-dri2-0 libxcb-dri3-0 libxcb-present0 libxcb-sync1 libxshmfence1 libxxf86vm1 |
The Dropbox will generate a unique one-time link, and user need to copy this link into a browser to authorize the action.
Once the service running, the Dropbox will sync your library under the home folder.
Create Git repo in Rstudio
Create repo in Github
1 | git config --global user.name "lyjspx" |
1 | git pull --set-upstream origin main |
1 | git add . && git commit -m "initial commit" && git push -u origin main |
To be completed
Host directory can be mounted to a container at read-lony or read-write mode.
It looks like LXD officially support one-step configuration from some time. In the previous version, we have to go through serveral steps to mount it in read-write mode. See the conversations.
Now, we can easily define the mounting mode by tuning readonly flag.
1 | lxc config device add container name disk source=/data path=/mnt/data readonly=true |
1 | docker: Error response from daemon: failed to create shim: OCI runtime create failed: container_linux.go:380: starting container process caused: process_linux.go:545: container init caused: rootfs_linux.go:76: mounting "proc" to rootfs at "/proc" caused: mount through procfd: permission denied: unknown. |
1 | lxc launch ubuntu -c security.nesting=true |
1 | lxc stop container |
1 | docker run -d -ti --rm -p 8787:8787 -e ROOT=TRUE -e PASSWORD=yourpasswordhere --name RStudioServer --mount source=R_data,target=/home/rstudio/rdata rstudio |
-d: detach
-t: psudo-terminal
-i: interactive
–rm: clean up
1 | lxc config device add mycontainer myport80 proxy listen=tcp:0.0.0.0:80 connect=tcp:127.0.0.1:80 |