rgardner / bsh Goto Github PK
View Code? Open in Web Editor NEWBash-like shell (builtins, piping) written in C
Bash-like shell (builtins, piping) written in C
Functions can return an enum variant, NULL, or -1, causing the caller to check errno. We can then define our own custom errno values for some issues.
jobs
cd
history
exit
kill
fg
and bg
alias
dirs
, pushd
, popd
which
Set up doxygen to automatically create documentation from the code comments. Add rules to the doxygen config file:
WARNINGS = YES
WARN_IF_UNDOCUMENTED = YES
WARN_IF_DOC_ERROR = YES
TODO
Reference:
https://www.sudo.ws/todd/papers/strlcpy.html
Run bsh
:
$ nonexistentprogram
$ nonexistentprogram
$ nonexistentprogram
$ ^D
$ ^D
$ ^D
$ ^D
It seems to be a problem with execvp and creating extra shells when a program cannot be found. The expected behavior is printing an error to the screen.
$ echo test
$ !1
Segmentation fault: 11
$ echo test
$ !-1
tes
$ # should be test
$ echo test2
$ !-1
test
$ # should be test2
$ !-5
Segmentation fault: 11
Use the C/C++ guide on this page as a reference: https://developer.mozilla.org/en-US/docs/Mozilla/Developer_guide/Coding_Style
Use mozilla style, but ensure:
AlignTrailingComments: true
ColumnLimit: 80
PointerBindsToType: true
Language: C or CPP
UseTab: never
If possible, only use these if they differ from the mozilla style.
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