-sh: 27: source: not found

The reason why the shell script in ubuntu12.04 cannot use source and the solution to

execute the command: source ./.bashrc prompt error message: -sh: 27: source: not found



Reason: ls -l `which sh` prompts /bin/sh - > dash

This shows that dash is used for parsing.

Change back method:
command line execution: sudo dpkg-reconfigure dash
in the interface, select no

and then ls -l `which sh` prompts /bin/sh -> bash


to modify successfully, the source can be used ~

Note: It is best to log in again Execute the source command again