petergi

# These can be copied and pasted, one line at a time, to the Terminal, but since they recursively target
# specific folders, be sure to use this exact syntax to avoid any problems:

sudo rm -rf ~/.Trash
sudo rm -rf /Volumes/*/.Trashes

petergi

system_profiler SPDisplaysDataType | grep Resolution

petergi

#!/bin/bash

mem=$(sysctl -n hw.memsize)
mem="$((mem/1073741274)) GB"

echo $mem

petergi

#!/bin/bash

cpu=$(sysctl -n machdep.cpu.brand_string)

# removes (R) and (TM) from the CPU name so it fits in a standard 80 window
cpu=$(echo "$cpu" | awk '$1=$1' | sed 's/([A-Z]\{1,2\})//g')

echo "$cpu"

petergi

#!/bin/bash

disk=$(df -Hl | head -2 | tail -1)
dpercent=$(echo "$disk" | awk '{print $5}')
dfree=$(echo "$disk" | awk '{print $4}')
dused=$(echo "$disk" | awk '{print $3}')
dcapacity=$(echo "$disk" | awk '{print $2}')


echo "$disk"

petergi

#!/bin/bash

hostname=$(HOSTNAME | sed 's/.local//g' | sed 's/.gateway//g' )

# if hostname is >35 characters, truncates to make it fit on std. 80 window
if [ ${#HOSTNAME} -gt 35 ]
then
   hostname=${HOSTNAME:0:35}
fi

petergi

#!/bin/bash


model=$(system_profiler SPHardwareDataType | awk '/Model Identifier/ { print $3 }')

# use grep to find the model in the list, then delete from ) to end of line
modelname=`grep $model $DIR/Models.txt | sed -e 's/).*/)/g'`

echo $modelname

petergi

stat -f %OLp <any accessible file>

petergi

networksetup -listallhardwareports

petergi

Swift 5 Cheatsheet

Table Of Contents

• Variables
• Functions
• Operators
• Classes, Objects, Properties
• Structs
• Control Flow