Common error in script execution: build sh: caller: not found

1 bash And dash

from Ubuntu 6.10 Start , By default dash(theDebian Almquist Shell) instead of bash(the GNUBourne-Again Shell) but Login Shell still bash. as a result of dash faster 、 More efficient , And it fits POSIX standard .Ubuntu It will run a lot at startup shell Script , Use dash It can speed up the startup .

2 Executing scripts often has some unknown errors

such as ：build.sh: caller: not found

I have also encountered some other inexplicable mistakes

First look at your own script bash Analysis or dash Analytic , We usually use... By default bash

Use the command first ls -l /bin/sh Take a look at the script parsing of your system

3 Switch sh by bash/dash

sudo dpkg-reconfigure dash

An interface appears to select no Switch to a bash Resolved by parsing ：build.sh: caller: not found

Switch back and execute the command again yes that will do