On Mac

Fundamental

• macOS
  • a series of proprietary graphical operating systems developed and marketed by Apple Inc. since 2001.

• Identify the ports on your Mac
• MacBook Pro (15-inch, 2019) - Technical Specifications

Configuration

• How to change your default browser on Mac, through the System Preferences menu or the new browser's settings (Jun 25, 2019)

• Mac keyboard shortcuts

Filesystem

• File System Basics

• IMPORTANCE OF /VAR FOLDER IN MACOSX

Network Management

• How to See the Routing Table on Mac OSX (SEP 20TH, 2016)
  • netstat -rn
• How to direct IP route through specific interface in OS X (May 19 '14)
  • route add -host 54.81.143.201 -interface en0

Linux Compatibles

Linux Software	Mac Software	Remarks
getopt	gnu-getopt	long option support
route	route	FreeBSD

• Differences between sed on Mac OSX and other “standard” sed? (May 24 '11)
• How to use GNU sed on Mac OS 10.10+, 'brew install --default-names' no longer supported (May 2 '15)

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Tools

Homebrew

• https://brew.sh
• Desc. : The Missing Package Manager for macOS

• Homebrew Formulae an online package browser for Homebrew

References

• Homebrew Documentation
• brew man-page

Commands

Command	Description	Remarks
brew list [options] [formula|cask]	List all installed formulae or casks	alias: ls
brew outdated [options] [formula|cask]	List installed casks and formulae that have an updated version available.
brew search [text|/text/]	Perform a substring search of cask tokens and formula names for text.
brew info [options] [formula|cask]	Display brief statistics for your Homebrew installation.
brew install [options] formula|cask	Install a **formula** or **cask**.
brew uninstall	Uninstall a package.
brew upgrade [options] [formula|cask]	Upgrade outdated casks and outdated, unpinned formulae using the same options they were originally installed with, plus any appended brew formula options.
brew services list	List all managed services for the current user.
brew services run	Run the service without registering to launch at login (or boot).
brew services start	Start the service immediately and register it to launch at login (or boot).
brew services stop	Stop the service immediately and unregister it from launching at login (or boot).
brew tap [options] [user/repo] [URL]	Tap a formula repository.
brew tap	List all installed taps.

$ # search formula of which name containing 'openjdk'
$ brew search openjdk

$ # search formula undeer 'ethereum/ethereum' tap
$ brew search ethereum/ethereum

Repositories

Tap	Description	Remarks
Homebrew Cask	Homebrew Cask extends Homebrew and brings its elegance, simplicity, and speed to the installation and management of GUI macOS applications such as Atom and Google Chrome.
Homebrew Ethereum	Homebrew Tap for Ethereum

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Tips and Tricks

Administration

Optimizing routing table in case of multiple network interfaces

Update hosts file and routing table

#! /bin/bash

declare hosts=(
  'vdi.solar.com'
  'wiki.solar.com'
  'issues.solar.com'
  'devops.solar.com'
  'helpdesk.solar.com'
)	

declare addrs=(
  '10.250.**.***'
  '10.250.**.***'
  '10.250.**.***'
  '10.250.**.***'
  '10.250.**.***'
)

# updates `hosts` file
for (( i = 0; i < ${#hosts[@]}; i++ )); do
  grep -Exq "\s*${addrs[$i]}\s+${hosts[$i]}\s*" /etc/hosts || sudo sh -c "echo '${addrs[$i]} ${hosts[$i]}' >> /etc/hosts"
done;

# updates routing table
for addr in ${addrs[@]}; do
  sudo route delete -host $addr
  sudo route add -host $addr 10.250.*.1
done;

echo ''
echo "Successfully updated host file and routing table."
echo "To check what's done, run 'cat /etc/hosts' and 'netstat -nr'."
echo ''