codeasashu

Basics (Should know)

1. [[ Goto function definition starting from cursor position
2. '', `' Return to previous cursor position
3. { Go back to previous linegap, } go to next linegap
4. dgg Remove from current position to begining of file
5. dG Remove from current to end of file
6. #, * search and highlight the word under current cursor in the whole file.
7. ma to set mark at position a, 'a to go to line at mark a, or `a to go to exact column at a
8. gd to go to local variable initialisation. (gd = Goto Declaration)

codeasashu

version: '3'

services:

  consul-agent-1: &consul-agent
    image: consul:latest
    networks:
      - consul-demo
    command: "agent -retry-join consul-server-bootstrap -client 0.0.0.0"

codeasashu

#
# iptables configuration
#
# The following allows in- and outbound traffic
# within a certain `CIDR` (default: `192.168.0.0/24`),
# but blocks all other network traffic.
#

ALLOWED_CIDR1=172.0.0.0/16
ALLOWED_CIDR2=13.233.249.192

codeasashu

FROM  python:3  
EXPOSE  8000
CMD ["python", "-m", "http.server"]

codeasashu

#!/bin/bash

## Below script allows to fetch private github/gitlab repo
## Assume, $PRIVATE_SSH = 
## -----BEGIN OPENSSH PRIVATE KEY-----
## b3BlbnNzaC1rZXktdjEAAAAABG5.....

cat > /root/.ssh/id_rsa <<EOF
-----BEGIN OPENSSH PRIVATE KEY-----
b3BlbnNzaC1rZXktdjEAAAAABG5.....

codeasashu

#!/bin/sh
##Useage: ./getes.sh 
## To dry run query: ./getes.sh -v -x POST -d '{a:b}' http://elasticurl
## To actually run query: ./getes.sh -x POST -d '{a:b}' http://elasticurl
## Default action is search, so you can omitt -x GET switch

METHOD="GET"
DATA="{}"
DRYRUN=0

codeasashu

#log_format custom '$request_body';
log_format custom '$remote_addr - $remote_user [$time_local] '
                       '"$request" $status $bytes_sent '
                       '"$http_referer" "$http_user_agent" "$request_body"';

log_format json_combined escape=json
  '{'
    '"time_local":"$time_local",'
    '"remote_addr":"$remote_addr",'
    '"remote_user":"$remote_user",'

codeasashu

1. Toggle hidden files I

2. Create new file at given directory cursor: ma

codeasashu

1. Extract all (PHP) requests from apache access.log:
grep -Eo '"POST /[a-zA-Z0-9_ ]+/[a-zA-Z0-9_]+.php HTTP/1.1"'  access.log

2. find all urls in a folder across all files:
grep -rnEo "(http|https)://[a-zA-Z0-9./?=_-]*" folder/

3. SED delete range of lines in a huge text files:
sed -i '21,141d' file

codeasashu

Rebase

Saving yourself from rebase conflicts

Ref: https://stackoverflow.com/a/44789323

1. create a new branch git checkout -b new_clean_branch

2. apply all changes