innyso’s gists

innyso / vim_insert_content_current.md

Last active May 16, 2020 05:22

#vim #cmd

Insert the result of a command to the current file:

# insert result of ls to current file
:r !ls

where

:r --> :r file Read contents of a file to the workspace

innyso / paste_command.md

Last active April 18, 2020 02:20

#linux #cmd #paste

Learnt something new this week

I have two files where I want to concat the two column together to create a readme table

$ cat fruit
apple
pineapple
orange
lemon

innyso / pipenv_jupyter_notebook.md

Last active April 12, 2020 11:07

#pipenv #python #jupyter

Run Jupyter notebook using pipenv

pipenv shell
pipenv install jupyter
pipenv run jupyter notebook

innyso / request_limit_k8.md

Last active April 11, 2020 12:48

#k8s #resource #requet #limit

Request and limit in kubernetes

Request

used when scheduling pods to nodes where schduler will ensure the sum of all requests pods on a node does not exceed the capacity of the node
request set the minimum resources that are require for the pod i.e. guaranteed to be present on the node

Limit

limit set maximum resources that the pod would like to have. This can be higher than its requests. This is best-effort basis

Over subscribe resources

innyso / add_commandline_arg_docker_run.md

Last active April 11, 2020 12:46

#docker #cmd #overwrite #entrypoint

A few rules applied when using Entrypoint and CMD

must specify at least 1 of them
Use CMD to define default executable but its easily overwritable by docker run imagename overwrite-cmd-here
Use ENTRYPOINT when you want the user to use the executable defined. Although its still possible to overwrite entrypoint by passing in --entrypoint its a bit harder than CMD
To have the ability to combine CMD and ENTRYPOINT, make sure you use the exec format instead of the shell format

To allow user pass in commandline argument during docker run

Dockerfile

innyso / remove_all_fg_jobs.md

Last active April 18, 2020 02:19

#linux #cmd #fg #jobs

jobs -p | grep -o -E '\s\d+\s' | xargs kill

innyso / git_checkout_file_specific_sh.md

Created April 7, 2020 12:45

#git #checkout

git checkout SHA <path/to/file>

innyso / linux_find_os_version.md

Last active April 12, 2020 11:06

#linux #cmd #os_version

cat /etc/os-release
lsb_release -a
hostnamectl

innyso / vim_paste_in_insert_mode.md

Last active May 9, 2020 11:50

#vim #paste #insertmode

vim offer

+ or * to access system clipboard
" for the unnamed registry which is the last thing y or d

CTRL+r Insert the contents of a register in insert mode.

Hence we can do the following to

innyso / vim_registry.md

Last active April 11, 2020 12:42

#vim #register

vim has something called registers which is like spaces that allow us to store text information and allow us to access it using its identifier

default registers

+ and * system clipboard
" unnamed register where everything last yank/delete will be there

numbered registers

vim automatic populate "0 to "9 where "0 is the latest yank/delete and the rest are the last 9 yank/delete

read only registry

iso innyso