TLDR Search

Enter a command. For example: chflags, machine, launchctl, xcodebuild.

dd

Convert and copy a file. More information: https://ss64.com/osx/dd.html.

• Make a bootable USB drive from an isohybrid file (such like archlinux-xxx.iso):
   
  dd if={{file.iso}} of=/dev/{{usb_drive}}
   
• Clone a drive to another drive with 4 MB block and ignore error:
   
  dd if=/dev/{{source_drive}} of=/dev/{{dest_drive}} bs=4m conv=noerror
   
• Generate a file of 100 random bytes by using kernel random driver:
   
  dd if=/dev/urandom of={{random_file}} bs=100 count=1
   
• Benchmark the write performance of a disk:
   
  dd if=/dev/zero of={{file_1GB}} bs=1024 count=1000000