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View shell_script_design_goals.md

Shell Script Design Goals

  • Don't avoid bashisms unless you know bash will be unavailable
    • Use #!/bin/bash rather than #!/bin/sh
    • If you are going to try to avoid bash, you must test on a system that does not have bash
  • Always include a shebang #!
  • Handle errors
    • Use set -eu (errexit & nounset)
  • Sould be idemponent if read via source
    • Use subshells to avoid leaking unintended variables into the parent scope
View local-bin
#!/bin/bash -eu
[[ -z ${1:-} ]] && \
echo -e "\n""Usage: $0 executable_path [destination_path] ""\n" || \
executable_path="${1:-}"
: $executable_path
destination_path="${2:-/usr/local/bin}"
exec="$( basename $executable_path )"
dir="$( dirname $executable_path )"
View temp
Thu Nov 14 12:11:48 EST 2019
View temp
Thu Nov 14 12:10:38 EST 2019
@RichardBronosky
RichardBronosky / Fork your own Gist.md
Last active Nov 14, 2019 — forked from antichris/about.md
Fork your own Gist
View Fork your own Gist.md

Fork your own Gist

It used to be possible to fork your own gists via the browser using a little JS magic. This is no longer the case. As an alternative, you can use Chris Wanstrath's https://github.com/defunkt/gist cli tool to do the next best thing.

Usage

gist-fork git@gist.github.com:fcc543f7f1cfba404caf5ce276cc0951.git
View README.md

Assume-Role

AWS Assume-Role requiring only aws-cli and jq

Installation

Basic

git clone https://gist.github.com/80306011bb5da80c765ffd6aa2ecf89b.git arole
@RichardBronosky
RichardBronosky / README.md
Last active Nov 10, 2019
AWS Assume-Role requiring only aws-cli and jq
View README.md

Assume-Role

AWS Assume-Role requiring only aws-cli and jq

Installation

Basic

git clone https://gist.github.com/80306011bb5da80c765ffd6aa2ecf89b.git arole
View pid_lineage.sh
#!/bin/bash -eu
pid_lineage(){
ps -p ${1:-$$} -o pid,ppid,args | tail -n1 | \
(
read pid ppid args
echo -e "$pid\t$args"
[[ $pid -gt 1 ]] && pid_lineage $ppid -
) | (
[[ ${2:-} != '-' ]] && \
@RichardBronosky
RichardBronosky / confd-quick-start-guide.md
Last active Oct 24, 2019
Quick Start Guide for confd using the "file" backend
View confd-quick-start-guide.md
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