Shell Commands Cheatsheet 🐢

Explain Shell :)

Just enough

IPFS

Start daemon: ipfs daemon &

Add folder contents:

$ ipfs add -r ~/vinniejames`
> ...
> added QmYicLozp9LJTmMesPcKboX2wfbDAqcn4nb1zj24pm4Us5 vinniejames // <site hash>

Vist IPFS: https://ipfs.io/ipfs/QmYicLozp9LJTmMesPcKboX2wfbDAqcn4nb1zj24pm4Us5

The last line will be the hash for your site: <site hash>

Publish / Resolve:

$ ipfs name publish <site hash> // QmYicLozp9LJTmMesPcKboX2wfbDAqcn4nb1zj24pm4Us5
> Published to QmUZUpvacpRdgSfaPze59SeRmFevdj3nKf4t3smJ1eFhLJ: // <peerID>
> /ipfs/QmYicLozp9LJTmMesPcKboX2wfbDAqcn4nb1zj24pm4Us5

Vist IPNS: https://ipfs.io/ipns/QmUZUpvacpRdgSfaPze59SeRmFevdj3nKf4t3smJ1eFhLJ

Confirm resolution <peerID>

$ ipfs name resolve QmUZUpvacpRdgSfaPze59SeRmFevdj3nKf4t3smJ1eFhLJ // <peerId>
> /ipfs/QmYicLozp9LJTmMesPcKboX2wfbDAqcn4nb1zj24pm4Us5 <site hash>

Set DNS:

TXT dnslink=/ipfs/<peerID> might work also

Vist IPNS: https://ipfs.io/ipns/vinniejames.de

Windows Power Shell

Set profiles:

Current user, Current Host $Home\[My]Documents\WindowsPowerShell\Profile.ps1

Mimic Unix commands in Power Shell http://superuser.com/questions/502374/equivalent-of-linux-touch-to-create-an-empty-file-with-powershell Make touch work (this can be set in the user profile)

function touch {set-content -Path ($args[0]) -Value ($null)}

OR

New-Item -ItemType file example.txt

List all envvars ls Env:

Access envvars $Env:NAME

Set persistant envvars setx NAME value

Set session envvars set NAME value

Control operator &

ipfs daemon &

If a command is terminated by the control operator &, the shell executes the command in the background in a subshell. The shell does not wait for the command to finish, and the return status is 0.

Logging stdout and stderr

python script.py 2>&1 | tee output.log

script output.log; python script.py

Static Site Backup

wget -P /path/to/destination/directory/ -mpck --user-agent="" -e robots=off --wait 1 -E https://www.example.com/

AWS

Download S3 bucket to local aws s3 sync s3://bucketName localFolder/path

Upload sync local to S3 aws s3 sync localFolder/path s3://bucketName

Upload sync with delete aws s3 sync localFolder/path s3://bucketName --delete

Git cherry pick

eg next-master commits need to be saved for later

git checkout master -b on-hold-changes-branch

git cherry-pick olderCOmmitHash^..newerCommitHash inclusive branches (repeat for another range of commits)

git checkout next-master

git revert olderCOmmitHash^..newerCommitHash

git push origin next-master will open a commit message dialouge for each revert

VIM save w/o sudo

:w !sudo tee %

Docker

Build image in current Dockerfile dir

docker build -t docker-image-name .

Run container, expose and publish local:8080 and map to container:80

docker run -p 8080:80 container_name

Run container with mapped local src folder

docker run -v /Path/to/dev/folder:/var/www/html -p 8080:80 --sig-proxy=false named-image

Enter bash shell for container

docker exec -it container_name /bin/bash

Check for cache hits

Check cache status: curl -svo /dev/null https://url.to/test

Purge doc from Fastly: curl -X PURGE https://url.to/purge/

Verify Checksum

SHA-256: shasum -a 256 ~/Downloads/verifyMe.zip

MD5: md5 ~/Downloads/verifyMe.zip

Multi-line write to file

cat > /path/to/new/file.ext << EOF
// one
// two
// three
EOF

OR disable expansion by quoting the here-doc delimiter

cat > /path/to/new/file.ext << 'HERE'
$keep
$dollar
$signs
HERE

Find

List files by creation:

find . -type f -newermt 2016-09-07 | xargs ls -la

find text files that were last modified 60 days ago:

find /home/you -iname "*.txt" -mtime -60 -print

http://www.cyberciti.biz/faq/howto-finding-files-by-date/

Recursively delete all files of a name or specific extension in the current directory

find . -name "*.bak" -type f

to see exactly which files you will remove

Then add -delete flag

find . -name "*.bak" -type f -delete

Search

GREP search all files and folders recursivley, \ escapes “.”

grep -r "3\.1\.2" .

Find all instaces of a string, then >> print out to a file

grep -rin "string to find" * >> results.txt

Show number of files a string occurs in recursively

find . -type f | xargs grep -l 'string to search for' | wc -l

Find and replace string in files recursively in directory:

find folder/name/to/search -type f -exec LC_ALL=C sed -i '' -e 's/RegExStringToFind/RegExsStringToReplace/g' {} \;

Cron Jobs

To view: crontab -l To edit: crontab -e Example:

MAILTO=your-email@gmail.com
*/30	*	*	*	*	/usr/local/bin/wget -O - -q -t 1 http://example.com/
0	10,16	*	*	*	/usr/local/bin/wget -O - -q -t 1 http://example/update

Aliases for shell .profile

alias sshExample='ssh username@ftpAddressOrIp'

alias storm='open /Applications/WebStorm.app'

Vagrant

Add localhost TLS

Create self-signed OpenSSL certificate, and mount to VM directory, eg $local/cert >> $vagrant/var/www/cert

Enable SSL in Apache config /etc/apache2/sites-enabled/default-ssl.conf

#   SSL Engine Switch:
#   Enable/Disable SSL for this virtual host.
SSLEngine on

#   A self-signed (snakeoil) certificate can be created by installing
#   the ssl-cert package. See
#   /usr/share/doc/apache2/README.Debian.gz for more info.
#   If both key and certificate are stored in the same file, only the
#   SSLCertificateFile directive is needed.
#SSLCertificateFile     /etc/ssl/certs/ssl-cert-snakeoil.pem
#SSLCertificateKeyFile /etc/ssl/private/ssl-cert-snakeoil.key
SSLCertificateFile      /var/www/cert/domain_dev.crt
SSLCertificateKeyFile   /var/www/cert/domain_dev.key

SSH into vagrant box: vagrant ssh

Stop or start vagrant, from Vagrantfile dir

vagrant up

vagrant halt

Rebuild vagrant from config file

vagrant provision

DATABASE DUMP via VAGRANT

vagrant ssh

mysql> show databases;
+----------------------+
| Database             |
+----------------------+
| information_schema   |
| mysql                |
| performance_schema   |
| wordpress_default    |
| wordpress_develop    |
| wordpress_trunk      |
| wordpress_unit_tests |
+----------------------+
7 rows in set (0.01 sec)

! exit mysql back to vagrant shell vagrant@vvv:/vagrant$ mysqldump wordpress_develop > backupFileName.sql

SCP

copy from remote to local:

scp username@serveraddress:~/foo.txt localfolder/foo-local.txt

copy from local to remote

scp bar.txt username@serveraddress:~/barzzz.txt

copy from remote to current local dir

scp -r username@serveraddress:/foldertocopy .

Copy file into running vagrant vm:

scp -P 2222 vagrant@127.0.0.1:/home/vagrant/wp_dump.sql .

pw: vagrant

List folder sizes

du -sh *

copy folder

cp -rf /source/path/ /destination/path/

Quick Empty trash

rm -rf ~/.Trash/*

Secure Erase Empty Space

diskutil secureErase freespace (level 0-4) /Volumes/(Drive Name)

(level 0-4) is a number indicating the number of passes to write to the free space

Levels:

• 0 – Single-pass zero-fill erase.
• 1 – Single-pass random-fill erase.
• 2 – US DoD 7-pass secure erase.
• 3 – Gutmann algorithm 35-pass secure erase.
• 4 – US DoE algorithm 3-pass secure erase.

Warning! It’s critically important that you include the freespace portion of that command. If you don’t, diskutil will happily start securely erasing the entire disk

Reset file permissions for WordPress or Webapp

directories find . -type d -exec chmod 755 {} \; files find . -type f -exec chmod 644 {} \;

wp permissions

sudo find . -type f -exec chmod 644 {} +

sudo find . -type d -exec chmod 755 {} +

sudo chmod 600 wp-config.php

Recursively find and replace in files

e.g.

find . -name "*.txt" -print0 | xargs -0 sed -i '' -e 's/fooOldString/barNewString/g'

find . -name "*.php" -print0 | xargs -0 sed -i '' -e 's/src="img/src="<?php echo get_template_directory_uri(); ?>\/img/g'

find . -name "*.php" -print0 | xargs -0 sed -i '' -e 's/this.src='\/img\/png/this.src='<?php echo get_template_directory_uri(); ?>\/img\/png/g'

regex e.g. s/this.src='\/img\/png/this.src='<?php echo get_template_directory_uri(); ?>\/img\/png/g

Remove class="lead"

find . -name "*.php" -print0 | xargs -0 sed -i '' -e 's/class="lead/class="/g'

Switch versions of Node

https://gist.github.com/kugaevsky/68a7fa894551da9c310a http://apple.stackexchange.com/questions/171530/how-do-i-downgrade-node-or-install-a-specific-previous-version-using-homebrew e.g.

brew install node010 followed by

brew link --overwrite node010

to install the 0.10 version of Node.JS.

You might also need to brew unlink node before you brew install node010