please I need help with my terminal [duplicate]

After I open Terminal in OS X:

Last login: Tue Oct 28 10:29:21 on ttys000 login(14773,0x7fff7572f300) malloc: * error for
object 0x7fd4bb715110: pointer being freed was not allocated * set a breakpoint in
malloc_error_break to debug

[Process completed]

I have no idea what I did or how to fix it.

Go to Preferences → General and set Shells open with to Command, and enter the following:

/bin/bash -x

Open a new shell and see what is being run, then remove the relevant lines from your profile files.

1. Go to Terminal icon on Dock, press right click and press New Command 2./bin/bash -x (it shows your problem)
2. sudo nano .bash_profile (open this problem place)
3. delete this, Ctrl + X (exit) Yes, Enter

I know this is old...but I had the same problem, and couldn't find any information to fix this issue, so I decided to share the solution here too.

Hopefully it helps someone else. :)

After upgrading a Mac from OS X 10.6.8 (Snow Leopard) to 10.11.4 (El Capitan), it would no longer open a shell in Terminal. It would open a Terminal Window with only [Process completed] displayed on the screen.

The Console log showed the errors:

login: in openpam_load_module(): no pam_serialnumber.so found
login: pam_start(): system error

This post (https://discussions.apple.com/message/11861278#11861278) pointed me in the right direction.

I checked the contents of /private/etc/pam.d/login.term on the affected Mac, and on a working Mac.

Broken Mac Terminal /private/etc/pam.d/login.term

# login: auth account password session
auth       optional       pam_krb5.so
auth       optional       pam_mount.so
auth       sufficient     pam_serialnumber.so serverinstall legacy
auth       required       pam_opendirectory.so
account    required       pam_nologin.so
account    required       pam_opendirectory.so
password   required       pam_deny.so
session    required       pam_uwtmp.so
session    optional       pam_mount.so

Working Mac Terminal /private/etc/pam.d/login.term

# login: account session
account    required       pam_nologin.so
account    required       pam_opendirectory.so
session    required       pam_uwtmp.so

I edited the contents of the Mac with the broken Terminal to match the Mac with the working Terminal, and Terminal immediately started working correctly. 😃