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analytics
​convert json perline to panads data frame
hierarchical data format
pandas format custom date in data frame​
bash
​bash forloop
parameter expansion
prompt confirmation in bash​
db
​disabling foreign key when importing dump
postgres add object to jsonb array from the same column
postgres audit log trigger
postgres naming trigger
set a column with value from different table​
dgraph
​dgraph docker compose whitelist ip​
docker
​docker compose make sure postgres is ready before starting other service​
git
​checkout last branch
different between two dots and three
force fail commit on master
git finish helper script delete current branch and update master
git mergetool and diff with p4merge
global gitignore file
intellij as diff and mergetool
push only current branch
reset email multiple commit
worktree switching branch without stash​
go
​default math.rand.source is thread save while rand.new source is not
deploying go to a vpn ubuntu server with github and ssl​
k8s
​kubernetes resource short name
scale deployment
view secret​
linux
​boot zfs root filesystem on grub
clearing up swap space
connect bluetooth device from cli
get full argument from a process
merge multiple pdf into a single file
removing old kernel
symbolic vs hard link
zfs auto snapshot
zfs external backup drive with snapshot and encryption​
net
​dnssec
ldap list users​
osx
​checksum a file from a url
cluster ssh in iterm2 with i2cssh
list open port
manage clipboard easily with jumpcut
pipe output to clipboard with pbcopy and pbpaste
show hidden file
sign application with self certificate
starting program on startup with login items​
python
​count frequency with lambda
double slash arithmetic operator
min and max of dict values​
react
​react named export vs default export
react useeffect
react.useref​
unix
​bulk renaming multiple file
convert pdf to text using ocr
diff output of 2 command
encryption with gpg
extend letsencrypt certificate with dns challenge
ffmpeg monitor and restart stream when it hung or stall
file size older than x days
filtering json with jq
find out what is using swap
fish environment variables from 1password
formatting or parse json in command line
get all line except n last one
grep print only matched
jq extracting properties to arrays from json row line
keep n recent item in folder
open last command in the editor with fc
parsing epoch timestamp to date
pbcopy alternative for copying to clipboard
process pipe operator
record a web stream to youtube
regex for validating password
rename tmux window
repeat content of text x time
replacing last command and execute it
reusing last command argument
send slack message from command line
sending curl post with file
sort file inline
specify compression level in tar gzip
zsh ctrl p same behavior as up arrow​
vim
​paste yanked text on command buffer​
analytics
Last modified 5mo ago
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