I just upgraded my Mac operating system to 10.15.1 (Catalina), and I'm now unable to interact with my terminal properly. When I open the Terminal application (or iTerm), it outputs the last attempted login time but does not then give me a prompt to enter commands.
I can see via Activity Monitor that the Terminal application is running a number of bash processes in the background that are possibly throwing errors, however I'm not sure how to decipher them. Here's a sample of what one such process is writing to
Sort by top of stack, same collapsed (when >= 5): __fork (in libsystem_kernel.dylib) 1314 read (in libsystem_kernel.dylib) 909 stat$INODE64 (in libsystem_kernel.dylib) 50 szone_force_unlock (in libsystem_malloc.dylib) 35 __ioctl (in libsystem_kernel.dylib) 34 tiny_malloc_from_free_list (in libsystem_malloc.dylib) 33 _objc_atfork_parent (in libobjc.A.dylib) 23 tiny_free_list_add_ptr (in libsystem_malloc.dylib) 23 _sigtramp (in libsystem_platform.dylib) 22 __open (in libsystem_kernel.dylib) 15 _platform_memmove$VARIANT$Haswell (in libsystem_platform.dylib) 12 _malloc_fork_parent (in libsystem_malloc.dylib) 9 sigprocmask (in libsystem_kernel.dylib) 9 __pipe (in libsystem_kernel.dylib) 7 __wait4 (in libsystem_kernel.dylib) 7 mach_msg_trap (in libsystem_kernel.dylib) 7 ??? (in bash) load address 0x10cac2000 + 0x28ae1 [0x10caeaae1] 6 close (in libsystem_kernel.dylib) 6 tiny_free_no_lock (in libsystem_malloc.dylib) 6 tiny_malloc_should_clear (in libsystem_malloc.dylib) 6 fork (in libsystem_c.dylib) 5 setpgid (in libsystem_kernel.dylib) 5 Binary Images: 0x10cac2000 - 0x10cb42ff7 +bash (118.40.2) <30A60B27-69AE-323A-AA7E-B8B648C54096> /bin/bash 0x10d8e2000 - 0x10d972b5f dyld (733.6) <DAFEA246-2F9A-3DCB-A37C-4246D4F92770> /usr/lib/dyld 0x7fff61168000 - 0x7fff61169ff3 libSystem.B.dylib (1281) <1DD1BCD2-2C85-3B81-8CAF-224FB042F441> /usr/lib/libSystem.B.dylib 0x7fff61446000 - 0x7fff61499fff libc++.1.dylib (800.7) <1D42387D-206A-3F06-9B5F-705B83EAC295> /usr/lib/libc++.1.dylib 0x7fff6149a000 - 0x7fff614aefff libc++abi.dylib (800.7) <D89ABFBF-3754-35AB-BAEE-FBF14857F79B> /usr/lib/libc++abi.dylib 0x7fff62939000 - 0x7fff62968ff7 libncurses.5.4.dylib (57) <7115BD9E-9A53-3538-BA7C-6D71E8C0F9F1> /usr/lib/libncurses.5.4.dylib ...
This problem is occurring when I have my Terminal preferences set to open shell with "Default login shell", which worked fine on my previous OS version, and with the startup command
/bin/bash. Interestingly, I'm able to start up my terminal successfully when I change the shell startup command to
/bin/sh, however I'm then unable to source my
bash_profile in sessions started that way (when I type
source ~/.bash_profile, the process hangs).
I tried renaming the file
com.apple.Terminal.OLD.plist, as per the suggestion here (that wasn't exactly my problem, but I was desperate, and it didn't work in any case).
I'm stuck—help much appreciated!