# macOS tips
## default font: Sans-serif typeface Helvetica

$ brew tap beeftornado/rmtree && brew install brew-rmtree
$ brew rmtree

vmnet1 private 192.168.56.1
vmnet8 private with NAT 192.168.57.1

## To Remove default folder view settings
sudo find / -name ".DS_Store"  -exec rm {} \;

## To restart bonjour service
sudo launchctl unload -w /System/Library/LaunchDaemons/com.apple.mDNSResponder.plist

## Flush DNS
sudo killall -HUP mDNSResponder

## enable ip forwarding
sudo sysctl -w net.inet.ip.forwarding=1

## Change default gateway
route delete default
route add default 192.168.0.1
route -n get default
## set gateway for network
route add -net 192.168.42.0 192.168.1.101 255.255.255.0
route get 192.168.1.0
route delete 192.168.1.0
## to add persistently
networksetup -listallnetworkservices
networksetup -setadditionalroutes "Thunderbolt Bridge" 192.168.13.0 255.255.255.0 192.168.2.2
## to delete route persistently
networksetup -setadditionalroutes "Thunderbolt Bridge"
## list static routes
netstat -rn

## port forwarding
sudo autossh -M 20000 -f -L 192.168.0.101:80:192.168.2.4:80 -N gowtham@127.0.0.1

## Add new key to
ssh-keygen
eval "$(ssh-agent -s)"
ssh-add ~/.ssh/id_rsa_harvey

## Prevent Mac from sleep
pmset noidle
caffeinate -i

## Special chars Ctrl+Cmd+Space
⌠∞
|x dx = x^2
⌡-∞

route.get("/static/*", responder: FileResponder("/path/to/public")

## To open an item/folder/program in finder
cmd-O, cmd-downArrow

## Alt + Key
Γο το Συστεμ Πρεφερενψεσ/Λανγθαγε & Τεχτ/Ινπθτ Σοθρψεσ, σεαρψη φορ Γρεεκ, αδδ ιτ. Νος υοθ μαυ τυπε θ φρομ κευβοαρδ.

## To print special chars alt+shift+key or alt+key  
Press ⌘+⌃+Space bar

sysctl -n machdep.cpu.brand_string

## minimise all windows except the one in front
Cmd+opt+H

## Xcode build from command line
xcodebuild

sudo lsof -i -P | grep -i "listen"
netstat -atp tcp | grep -i "listen"

vmware macos install
smc.version = "0"

## create rawdisk
diskutil list
 /Applications/VMware\ Fusion.app/Contents/Library/vmware-rawdiskCreator print /dev/disk#
/Applications/VMware\ Fusion.app/Contents/Library/vmware-rawdiskCreator create /dev/disk# ide
## add the lines to the end of vmx file
ide0:0.present = "TRUE"
ide0:0.fileName = "BlueBerry.vmdk"
ide0:0.deviceType = "rawDisk"
suspend.disabled = "TRUE"
smc.version = "0"

## Networking
sudo vi /Library/Preferences/VMware\ Fusion/networking

sudo vi /Library/Preferences/VMware\ Fusion/vmnet8/dhcpd.conf
#Now, after where it says End of "DO NOT MODIFY SECTION" enter the following lines:



host Windows8x64 {
hardware ethernet 00:0C:29:B6:22:3E;
fixed-address 192.168.167.80;
}
host Orange {
hardware ethernet 00:0C:29:F6:17:4B;
fixed-address 192.168.57.3;
}

sudo /Applications/VMware\ Fusion.app/Contents/Library/vmnet-cli --stop
sudo /Applications/VMware\ Fusion.app/Contents/Library/vmnet-cli --configure
sudo /Applications/VMware\ Fusion.app/Contents/Library/vmnet-cli --start

## running dhcp server
sudo vi /etc/bootpd.plist
```
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
        <key>Subnets</key>
        <array>
                <dict>
                        <key>_creator</key>
                        <string>com.apple.NetworkSharing</string>
                        <key>allocate</key>
                        <true/>
                        <key>dhcp_router</key>
                        <string>192.168.2.1</string>
                        <key>interface</key>
                        <string>bridge100</string>
                        <key>lease_max</key>
                        <integer>86400</integer>
                        <key>lease_min</key>
                        <integer>86400</integer>
                        <key>name</key>
                        <string>192.168.2/24</string>
                        <key>net_address</key>
                        <string>192.168.2.0</string>
                        <key>net_mask</key>
                        <string>255.255.255.0</string>
                        <key>dhcp_domain_name_server</key>
                        <array>
                                <string>8.8.8.8</string>
                                <string>1.1.1.1</string>
                        </array>
                        <key>net_range</key>
                        <array>
                                <string>192.168.2.2</string>
                                <string>192.168.2.254</string>
                        </array>
                </dict>
        </array>
        <key>bootp_enabled</key>
        <false/>
        <key>detect_other_dhcp_server</key>
        <array>
                <string>bridge100</string>
        </array>
        <key>dhcp_enabled</key>
        <array>
                <string>bridge100</string>
        </array>
        <key>dhcp_ignore_client_identifier</key>
        <true/>
        <key>ignore_allow_deny</key>
        <array>
                <string>bridge100</string>
        </array>
        <key>use_server_config_for_dhcp_options</key>
        <false/>
</dict>
</plist>
```
sudo vi /etc/bootptab
```
%%
# machine entries have the following format:
#
# hostname      hwtype  hwaddr              ipaddr          bootfile
BLR-L-SKUDUPUD  1       08:3A:88:61:70:23   192.168.2.3
```
sudo /bin/launchctl unload -w /System/Library/LaunchDaemons/bootps.plist
sudo /bin/launchctl load -w /System/Library/LaunchDaemons/bootps.plist

## samba network share
/etc/nsmb.conf

# to install command line tools
xcode-select --install

##
clang++ -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS10.3.sdk -framework OpenGLES -arch arm64 -stdlib=libc++ -std=gnu++11 -fembed-bitcode -c nautical.cpp

ar r libnauticalcpp.a nautical.o

## try it when operation not permitted
sudo chflags nouchg /usr/bin/php

## Set Xcode app
sudo xcode-select --switch /Applications/Xcode.app

brew install ffmpeg --with-fdk-aac --with-tools --with-freetype --with-libass --with-libvorbis --with-libvpx --with-x265

nameserver 202.88.174.6
nameserver 202.88.174.8

## telnet for mac
nc 192.168.2.1 23

## Password protect files
zip -e [new file name].zip [file path]

## All options print menu
defaults write -g PMPrintingExpandedStateForPrint -bool TRUE
defaults write -g PMPrintingExpandedStateForPrint -bool FALSE

## Disable dashboard
defaults write com.apple.dashboard mcx-disabled -boolean TRUE; killall Dock
defaults write com.apple.dashboard mcx-disabled -boolean FALSE; killall Dock

## autohide Dock delay
defaults write com.apple.dock autohide-delay -float 0; killall Dock
defaults write com.apple.dock autohide-delay -float 1; killall Dock

## hide unhide hidden file
Cmd + Shift + .

## Dock pop delay
defaults write com.apple.dock autohide-time-modifier -float 0; killall Dock
defaults delete com.apple.dock autohide-time-modifier; killall Dock

## screenshot
cmd + shift + 3 - capture entire screen
cmd + shift + 4 - capture portion
cmd + shift + 4 & space & click window - capture window
# saved on desktop
# Screenshot shadow disable
defaults write com.apple.screencapture disable-shadow -bool TRUE; killall SystemUIServer
defaults write com.apple.screencapture disable-shadow -bool FALSE; killall SystemUIServer

## Show Desktop
Command–Mission Control
F11

## nproc - number of cores
sysctl -n hw.physicalcpu

## macOS UDF

## soft remount
sudo kextunload -b com.apple.driver.AppleSDXC
sudo kextload -b com.apple.driver.AppleSDXC

## restart nfs server
nfsd restart

## set default shell to bash
chsh -s /bin/bash

## change uid of a user
sudo dscl . -change /Users/YourUserName UniqueID 501 1001
sudo find / -uid 501 -exec chown 1001 {} \;

echo "XAuthLocation /opt/X11/bin/xauth" >> /etc/ssh/ssh_config

## startup apps
Preferences->Users&Groups->LoginItems
or
sudo vi /Library/LaunchAgents/synergyc.plist
```
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>Label</key>
    <string>com.synergy.client</string>
    <key>OnDemand</key>
    <false/>
    <key>UserName</key>
    <string>Gowtham</string>
    <key>GroupName</key>
    <string>staff</string>
    <key>ProgramArguments</key>
    <array>
            <string>/usr/local/bin/synergyc</string>
            <string>--restart</string>
            <string>-n</string>
            <string>TwinkleMoss</string>
            <string>-f</string>
            <string>192.168.2.3</string>
    </array>
</dict>
</plist>
```
sudo launchctl load /Library/LaunchAgents/synergyc.plist
sudo launchctl unload /Library/LaunchAgents/synergyc.plist

## terminal won't support xterm-24Mcolor.terminfo

## sshfs
sshfs user@host:/somewhere/on/the/Y /Z -o volname=Z

## mDNSResponder is the in built DNS server
sudo launchctl unload -w /System/Library/LaunchDaemons/com.apple.mDNSResponder.plist
sudo launchctl load -w /System/Library/LaunchDaemons/com.apple.mDNSResponder.plist
#if SIP doesn't allow it
sudo killall -STOP mDNSResponder
sudo killall -CONT mDNSResponder

## SIP System Integration Protection
### Disable
1. restart in recovery mode
2. launch terminal from the utilities menu
3. run `csrutil disable`
4. reboot
### Enable
3. run `csrutil enable`

## gdb codesign for Unable to find Mach task port for process-id
- https://sourceware.org/gdb/wiki/PermissionsDarwin
- In keyChain access create codesign certificate gdb_codesign in system
  keychain.
- create file `~/Desktop/gdb-entitlement.xml`
  ```
  <?xml version="1.0" encoding="UTF-8"?>
  <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
  <plist version="1.0">
  <dict>
     <key>com.apple.security.cs.debugger</key>
     <true/>
  </dict>
  </plist>
  ```
 - `codesign --entitlements ~/Desktop/gdb-entitlement.xml -fs \ gdb_codesign $(which gdb)`
 - reboot
 
## iterm
### clear history i.e back scroll
Cmd + K