cmndrsp0ck

tmux cheat sheet

(C-x means ctrl+x, M-x means alt+x)

Prefix key

The default prefix is C-b. If you (or your muscle memory) prefer C-a, you need to add this to ~/.tmux.conf:

remap prefix to Control + a

cmndrsp0ck

Table Of Content

Skip to the relevant sections if needed.

• 2-min tutorial to do it the quick-and-dirty-way
• Concepts for resolving Git conflicts
• Setting up different editors / tool for using git mergetool
  • Finding out what mergetool editors are supported
• mergetool simple code example for vimdiff
  • Resolving conflict from a Git pull
• Other great references and tutorials

cmndrsp0ck

" vim-plug example
call plug#begin('~/.vim/plugged')
Plug 'pearofducks/ansible-vim'
call plug#end()

let g:ansible_goto_role_paths = './roles,../_common/roles'

function! FindAnsibleRoleUnderCursor()
  if exists("g:ansible_goto_role_paths")
    let l:role_paths = g:ansible_goto_role_paths

cmndrsp0ck

#!/usr/bin/env bash

# Backs up and restores tilix settings 

set -e

if [[ $1 == 'backup' ]]; then
  dconf dump '/com/gexperts/Tilix/' > tilix-settings.dconf
  echo "backup done"
  exit 0

cmndrsp0ck

PSQL

Magic words:

psql -U postgres

Some interesting flags (to see all, use -h or --help depending on your psql version):

• -E: will describe the underlaying queries of the \ commands (cool for learning!)
• -l: psql will list all databases and then exit (useful if the user you connect with doesn't has a default database, like at AWS RDS)

cmndrsp0ck

#!/bin/bash
set -e
set -o pipefail

# Add user to k8s using service account, no RBAC (must create RBAC after this script)
if [[ -z "$1" ]] || [[ -z "$2" ]]; then
 echo "usage: $0 <service_account_name> <namespace>"
 exit 1
fi

cmndrsp0ck

## Delete a remote branch
$ git push origin --delete <branch> # Git version 1.7.0 or newer 
$ git push origin :<branch> # Git versions older than 1.7.0

## Delete a local branch
$ git branch --delete <branch>
$ git branch -d <branch> # Shorter version
$ git branch -D <branch> # Force delete un-merged branches

## Delete a local remote-tracking branch

cmndrsp0ck

[Unit]
Description=consul agent
Requires=network-online.target
After=network-online.target

[Service]
EnvironmentFile=-/etc/sysconfig/consul
Environment=GOMAXPROCS=2
Restart=on-failure
ExecStart=/usr/local/sbin/consul agent $OPTIONS -config-dir=/etc/consul.d

cmndrsp0ck

[Unit]
Description=consul-template
Requires=network-online.target
After=network-online.target consul.service vault.service

[Service]
EnvironmentFile=-/etc/sysconfig/consul-template
Restart=on-failure
ExecStart=/usr/local/sbin/consul-template $OPTIONS -config=/etc/consul-template.d

cmndrsp0ck

# The command finds the most recent tag that is reachable from a commit.
# If the tag points to the commit, then only the tag is shown.
# Otherwise, it suffixes the tag name with the number of additional commits on top of the tagged object 
# and the abbreviated object name of the most recent commit.
git describe

# With --abbrev set to 0, the command can be used to find the closest tagname without any suffix:
git describe --abbrev=0

# other examples