Junio C Hamano <gitster@xxxxxxxxx> writes:
> Where do shells (e.g. bash and dash) go when you say "cd" without
> parameter when $HOME is unset, for example?
$ bash -c 'unset HOME; cd'
bash: line 0: cd: HOME not set
$ dash -c 'unset HOME; cd'
[no output and cwd not changed]
POSIX says:
If no directory operand is given and the HOME environment variable
is empty or undefined, the default behavior is
implementation-defined and no further steps shall be taken.
Another data point: bash falls back to getpwuid when expanding ~, dash
leaves it alone. (POSIX makes it unspecified.)
Andreas.
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Andreas Schwab, schwab@xxxxxxxxxxxxxx
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