Because we sometime need to work on the dark side...
Use Brew and Brew cask.
ps fThe MacOS version of ps does noot have a -f option. This can be emulated by using the pstree program available in the pstree brew package.
#!/usr/bin/perl
# treeps -- show ps(1) as process hierarchy -- v1.0 erco@seriss.com 07/08/14
my %p; # Global array of pid info
sub PrintLineage($$) { # Print proc lineage
my ($pid, $indent) = @_;
printf("%s |_ %-8d %s\n", $indent, $pid, $p{$pid}{cmd}); # print
foreach my $kpid (sort {$a<=>$b} @{ $p{$pid}{kids} } ) { # loop thru kids
PrintLineage($kpid, " $indent"); # Recurse into kids
}
}
# MAIN
open(FD, "ps axo ppid,pid,command|");
while ( <FD> ) { # Read lines of output
my ($ppid,$pid,$cmd) = ( $_ =~ m/(\S+)\s+(\S+)\s(.*)/ ); # parse ps(1) lines
$p{$pid}{cmd} = $cmd;
# $p{$pid}{kids} = (); <- this line is not needed and can cause incorrect output
push(@{ $p{$ppid}{kids} }, $pid); # Add our pid to parent's kid
}
PrintLineage(($ARGV[0]) ? $ARGV[0] : 1, ""); # recurse to print lineage starting with specified PID or PID 1.
Sources:
If there are sound problems, (low volume...) killing Core audio might be a solution:
sudo killall coreaudiod
sudo launchctl unload /System/Library/LaunchDaemons/com.apple.audio.coreaudiod.plist && sudo launchctl load /System/Library/LaunchDaemons/com.apple.audio.coreaudiod.plist
The equivalent of strace under MacOS is dtruss. To be run by superuser.
Example:
sudo dtruss python
To filter specific syscalls the following can be used:
sudo dtruss -f -t open python
lsof -nP -iTCP:$PORT | grep LISTEN
Sources:
MacOS is quite annoying when there are no space left, since removing a file even with rm allocates some space on APFS. In that case the best way to save some space is to flush the swap (which automatically grows on MacOS). Then make up some space.
In some cases the storage management tool is able to flush the Trash or remove some files, not only rarely.
The only way I found to flush the swap is to restart.
If you get in a situation where the disk is so full that the OS is not able to restart, you'll need to remove the swap partition from recovery mode.
Enter recovery mode: start computer and press CMD+R until the loading bar appear.
Once in recovery mode, with diskutil list locate your main drive.
Make sure that you are selecting the correct partition, you can safely remove the swap volume (it will be recreated at startup). The swap partition is the one called APFS Volume VM.
diskutil apfs deletevolume disk2s4
restart in normal mode ~