5738 |
information is available on the @href{www.qnx.com, @sc{qnx} home page}, |
information is available on the @href{www.qnx.com, @sc{qnx} home page}, |
5739 |
including the @href{http://support.qnx.com/support/docs/qnx4/, @sc{qnx} |
including the @href{http://support.qnx.com/support/docs/qnx4/, @sc{qnx} |
5740 |
man pages}. |
man pages}. |
5741 |
|
|
5742 |
|
@item Unix version 7 |
5743 |
|
@cindex Unix version 7 |
5744 |
|
@cindex V7 |
5745 |
|
Documentation is available in the |
5746 |
|
@href{http://plan9.bell-labs.com/7thEdMan/index.html, V7 Manual}. |
5747 |
@end table |
@end table |
5748 |
|
|
5749 |
|
|
8003 |
Bourne shell and upward-compatible shells like the Korn shell and Bash |
Bourne shell and upward-compatible shells like the Korn shell and Bash |
8004 |
have evolved over the years, but to prevent trouble, do not take |
have evolved over the years, but to prevent trouble, do not take |
8005 |
advantage of features that were added after @sc{unix} version 7, circa |
advantage of features that were added after @sc{unix} version 7, circa |
8006 |
1977. You should not use shell functions, aliases, negated character |
1977 (@pxref{Systemology}). |
8007 |
|
|
8008 |
|
You should not use shell functions, aliases, negated character |
8009 |
classes, or other features that are not found in all Bourne-compatible |
classes, or other features that are not found in all Bourne-compatible |
8010 |
shells; restrict yourself to the lowest common denominator. Even |
shells; restrict yourself to the lowest common denominator. Even |
8011 |
@code{unset} is not supported by all shells! Also, include a space |
@code{unset} is not supported by all shells! Also, include a space |