pharo80 --help

Usage: /Users/ducasse/bin/Pharo/Pharo64Stable.app/Contents/MacOS/Pharo [<option>...] [<imageName> [<argument>...]]

       /Users/ducasse/bin/Pharo/Pharo64Stable.app/Contents/MacOS/Pharo [<option>...] -- [<argument>...]

Common <option>s:

  --help                 print this help message, then exit

  --memory <size>[mk]    use fixed heap size (added to image size)

  --nohandlers           disable sigsegv & sigusr1 handlers

  --timephases           print start load and run times

  --breaksel selector    set breakpoint on send of selector

  --breakmnu selector    set breakpoint on MNU of selector

  --eden <size>[mk]      set eden memory to bytes

  --leakcheck num        check for leaks in the heap

  --stackpages num       use n stack pages

  --numextsems num       make the external semaphore table num in size

  --noheartbeat          disable the heartbeat for VM debugging. disables input

  --pollpip              output . on each poll for input

  --checkpluginwrites    check for writes past end of object in plugins

  --trace[=num]          enable tracing (optionally to a specific value)

  --warnpid              print pid in warnings

  --codesize <size>[mk]  set machine code memory to bytes

  --tracestores          enable store tracing (assert check stores)

  --cogmaxlits <n>       set max number of literals for methods to be compiled to machine code

  --cogminjumps <n>      set min number of backward jumps for interpreted methods to be considered for compilation to machine code

  --reportheadroom       report unused stack headroom on exit

  --maxoldspace <size>[mk]      set max size of old space memory to bytes

  --logscavenge          log scavenging to scavenge.log

  --headless             run in headless (no window) mode (default: false)

  --headfull             run in headful (window) mode (default: true)

  --version              print version information, then exit

  --blockonerror         on error or segv block, not exit.  useful for attaching gdb

  --blockonwarn          on warning block, don't warn.  useful for attaching gdb

  --exitonwarn           treat warnings as errors, exiting on warn

Notes:

  <imageName> defaults to `Pharo.image'.

  If '--memory' or '-maxoldspace' are not specified then the heap will grow dynamically.

  <argument>s are ignored, but are processed by the Squeak image.

  The first <argument> normally names a Squeak `script' to execute.

  Precede <arguments> by `--' to use default image.