swaldman

Setting up geth as a service under systemd Fedora 27

Prerequisite: dnf install golang

1. Create user geth with useradd
2. As user geth fast sync the blockchain, geth --fast --cache 1024
3. Manually run geth --rpc as user geth and watch to see that the blockchain continues to sync properly
4. Install the geth.service file (also in this gist) in /usr/lib/systemd/system/
5. Make a symlink from /etc/systemd/system/multi-user.target.wants/geth.service to /usr/lib/systemd/system/geth.service
6. systemctl enable geth followed by systemctl start geth

dsadaka

# This file actually fires up multiple sidekiq services.
# to start:  systemctl start sidekiq.target
#
[Unit]
Description=Fire up up to 6 sidekiqs
# If you want more than 6 processes, append sidekiq@7.service, sidekiq@8.service, etc. to the ExecStart line below
# Note that only as many as have been enabled will actually start.
# Note also that the Unit data for each sidekiq process is in /lib/systemd/system/sidekiq@.service

[Service]

rgl

bash -c 'while [[ "$(curl -s -o /dev/null -w ''%{http_code}'' localhost:9000)" != "200" ]]; do sleep 5; done'

# also check https://gist.github.com/rgl/c2ba64b7e2a5a04d1eb65983995dce76

z0mbix

# tcpdump -A -nn -s 0 'tcp dst port 9200 and (((ip[2:2] - ((ip[0]&0xf)<<2)) - ((tcp[12]&0xf0)>>2)) != 0)' -i lo
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on lo, link-type EN10MB (Ethernet), capture size 65535 bytes
14:32:33.525122 IP 127.0.0.1.49777 > 127.0.0.1.9200: Flags [P.], seq 313752908:313753888, ack 2465010394, win 257, options [nop,nop,TS val 2684167067 ecr 2684167066], length 980
E...^.@.@............q#...}L...............
..#...#.GET /index/_search HTTP/1.1
Host: 127.0.0.1:9200
Accept: */*
Content-Length: 845
Content-Type: application/x-www-form-urlencoded

nickjacob

[Unit]
Description=Demonstrate Bash

[Service]
ExecStartPre=/usr/bin/bash -c "/usr/bin/systemctl set-environment MYVAR=$(( 2 + 2 ))"
ExecStart=/usr/bin/echo "2 + 2 = ${MYVAR}"

JProffitt71

#!/bin/bash

# Usage: ./s3cmdclearfiles "bucketname" "30d"
 
s3cmd ls s3://$1 | grep " DIR " -v | while read -r line;
  do
    createDate=`echo $line|awk {'print $1" "$2'}`
    createDate=`date -j -f "%Y-%m-%d %H:%M" "$createDate" +%s`
    olderThan=`date -j -v-$2 +%s`
    if [[ $createDate -lt $olderThan ]]

prwhite

# Add the following 'help' target to your Makefile
# And add help text after each target name starting with '\#\#'
 
help:           ## Show this help.
	@fgrep -h "##" $(MAKEFILE_LIST) | fgrep -v fgrep | sed -e 's/\\$$//' | sed -e 's/##//'
 
# Everything below is an example
 
target00:       ## This message will show up when typing 'make help'
	@echo does nothing

sindresorhus

#!/usr/bin/env bash
# MIT © Sindre Sorhus - sindresorhus.com

# git hook to run a command after `git pull` if a specified file was changed
# Run `chmod +x post-merge` to make it executable then put it into `.git/hooks/`.

changed_files="$(git diff-tree -r --name-only --no-commit-id ORIG_HEAD HEAD)"

check_run() {
	echo "$changed_files" | grep --quiet "$1" && eval "$2"

arunoda

Installing SSHPASS

SSHPass is a tiny utility, which allows you to provide the ssh password without using the prompt. This will very helpful for scripting. SSHPass is not good to use in multi-user environment. If you use SSHPass on your development machine, it don't do anything evil.

Installing on Ubuntu

apt-get install sshpass

Installing on OS X

ceme

while true; do sleep 1; curl http://www.google.com; echo -e '\n\n\n\n'$(date);done