Getting started with bash
By Kam Leung
cd - When you need to cd to your previous folder
Example:
workspace > cd papercups
papercups > cd -
/Users/workspace
workspace >
cd !$ When you need to cd to the last argument of the previous command
workspace > ls papercups
CHANGELOG.md Procfile compile docker-compose.prod.yml elixir_buildpack.config index.html priv
CODE_OF_CONDUCT.md README.md config docker-compose.yml erl_crash.dump lib rel
CONTRIBUTING.md _build deps docker-entrypoint-dev.sh mix.exs scripts
Dockerfile app.json dev.Dockerfile docker-entrypoint.sh mix.lock test
LICENSE assets docker-compose.dev.yml docs phoenix_static_buildpack.config
workspace > cd !$
cd papercups
papercups >
mdfind (Mac only) - Search your entire mac for filename or content with that string instantly since macos automatically indexes your files see https://ss64.com/osx/mdfind.html for more details
papercups > mdfind papercups.png
/Users/Downloads/a84d1a73491349259196f52fbdc53321-Papercups.png
/Users/Downloads/V2.zip
/Users/Downloads/Papercups.png
/Users/Downloads/Color-Papercups.png
/Users/Downloads/White-Papercups.png
/Users/Downloads/Large_Papercups.png
/Users/Downloads/logo-design-a-paper-cups-inspi.zip
/Users/Downloads/File.zip
papercups >
pbcopy (Mac only) copys content in to your paste buffer
pbpaste (Mac only) output the contents of your paste buffer
Two for one example:
papercups > echo "Papercups Papercups Papercups" | pbcopy
papercups > pbpaste
Papercups Papercups Papercups
wc -l Gets line count of file
papercups > ls
CHANGELOG.md README.md deps docker-entrypoint.sh mix.lock
CODE_OF_CONDUCT.md _build dev.Dockerfile docs phoenix_static_buildpack.config
CONTRIBUTING.md app.json docker-compose.dev.yml echo priv
Dockerfile assets docker-compose.prod.yml elixir_buildpack.config index.html rel
LICENSE compile docker-compose.yml erl_crash.dump lib scripts
Procfile config docker-entrypoint-dev.sh file.txt mix.exs test
papercups > wc -l README.md
93 README.md
papercups >
sort sorts a file by line
uniq removes duplicate adjacent lines. I like to combine it with sort to dedupe a file.
grep use it to find files but I mostly use it as a way to filter when working with files
awk gets specific columns of a file
| Pipes output of one command in to the input of another command
I got a little lazy at this point and figure the best way to show case these commands is to chain them together. I was putting this post together when I wanted to see what are some of my common bash commands so I wrote some bash commands that looks through my bash history and gets filters out my git and echo commands.
history | awk -F' ' '{print $2, $3}' | sort | uniq | grep -v 'git\|echo'
history | awk -F' ' '{print $2, $3}' | sort | uniq | grep -v 'git\|echo'
cat file.txt
cat results.
cat results.csv
cd -
cd ..
cd ../docs/
cd ../papercups.io
cd ../papercups.io/
cd papercups
cd papercups.io
cd papercups.io/
code .
code index.html
cp results.csv
docs
env
gap
less results.csv
ls
ls papercups
ls results.csv
mdfind
mdfind papercups
mdfind papercups.png
mix phx.server
node
npm install
npm run
open index.html
papercups >
pbcopy |
pbpaste
pbpaste |
rm results.csv
rm results.txt
source .env
stty sane
tail -f
tail results.csv
tail results.txt
touch results.csv
ts-node inspect
ts-node inspeect
vim results.
vim results.csv
vim yc_companies.csv
wc -l
which node
Papercups is an open source customer support tool and an alternative to Intercom and Zendesk
GitHub repo: https://github.com/papercups-io/papercups