command line prompt (need current directory)
BURNS,JIM
gt0178a at prism.gatech.EDU
Fri Sep 14 21:29:42 AEST 1990
in article <1683 at ispi.COM>, jbayer at ispi.COM (Jonathan Bayer) says:
> I have a customer who wants/needs the prompt to show the current
> directory (similar to MS-DOS :-( ). I reached back into my archives
> and pulled out the following script:
In .kshrc, I do:
PS1="{${HOSTNAME}"':${PWD}}\
[!] '
In .cshrc, I do:
alias cd 'cd \!*;set prompt="`hostname``pwd`> [\\!] % "'
cd `pwd`
Putting them in the rc's executes them for each subshell. (The !'s are the
current history #'s.)
> spawned. The new shell does not inherit the shell function. My
> questions are:
>
> 1. How can I make the new shell inherit shell functions?
Ksh allows you to export functions with (for me):
typeset -fx cp ll man
I'm not aware of any way to do it in sh, and haven't run across any csh's
that support functions, per se (not aliases).
> 2. Is it possible to have a shell function have the same
> name as a real function (ie: name this function "cd",
> and have it use the normal "cd" to change the
> directory)?
Most shells will search for a builtin before executing an alias or
function. For a function that replaces the behavior of an external,
specify the pathname for the 'inside' invocation of the command, as in:
ll () { /bin/ls -alF $* | more ; }
This can be particularly important in shells that allow recursion!
--
BURNS,JIM
Georgia Institute of Technology, Box 30178, Atlanta Georgia, 30332
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