On Thu, Jul 02, 2020 at 12:46:33AM +0700, Robert Elz wrote: > POSIX says: > > If command is specified, exec shall not return to the shell; > > but in bash... > > bash > jinx$ echo $$ > 23361 > jinx$ exec : > bash: exec: :: not found > jinx$ echo $$ > 23361
You're in an interactive shell. Bash chose this behavior to make your life better. unicorn:~$ cat foo #!/bin/bash exec : echo "I am still here" unicorn:~$ ./foo ./foo: line 2: exec: :: not found unicorn:~$
