Use /dev/full to test language I/O-failsafety

perl -e 'print 1, 2, 3' > /dev/full
The Linux /dev/full file simulates a "disk full" condition, and can be used to verify how a program handles this situation. In particular, several programming language implementations do not print error diagnostics (nor exit with error status) when I/O errors like this occur, unless the programmer has taken additional steps. That is, simple code in these languages does not fail safely. In addition to Perl, C, C++, Tcl, and Lua (for some functions) also appear not to fail safely.
Sample Output
# nothing (no indication of error)

$ python -c 'print 1, 2, 3' > /dev/full
close failed: [Errno 28] No space left on device

8
By: mkc
2009-02-19 17:08:13

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What Others Think

now THAT is useful. +1
wwest4 · 487 weeks and 2 days ago
Phew! bash does right. :-) echo wtf > /dev/full bash: echo: write error: No space left on device
mpb · 483 weeks and 3 days ago

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