reg ex and the prompt

jcpunk has asked for the wisdom of the Perl Monks concerning the following question:

Replies are listed 'Best First'.
Re: reg ex and the prompt by pzbagel (Chaplain) on Jun 03, 2003 at 19:42 UTC
Why not check the return value of spawn? `$test=Expect->spawn("/bin/sh") \|\| die "Can't spawn /bin/sh:$!";` [download] On a side note, shell prompts are completely configurable, they can go from: `#` [download] to `[ user@host: 10:15pm: 12 ] ~/docs >` [download] You'll need to be more specific as what you think the prompts will look like to generate a better regex. HTH	[reply] [d/l] [select]
Re: reg ex and the prompt by arthas (Hermit) on Jun 03, 2003 at 19:45 UTC
The regex you need depends on the prompt. The following expression should however work in most cases: `$prompt =~ /[$%#>] $/;` [download] Michele.	[reply] [d/l]
Re: reg ex and the prompt by fglock (Vicar) on Jun 03, 2003 at 19:32 UTC
You could try something simpler, first. The prompt might not be what you are expecting: `[\]\$\>\#]\s`	[reply] [d/l]
Re: Re: reg ex and the prompt by sauoq (Abbot) on Jun 03, 2003 at 20:07 UTC
Why all that backwhacking? Something like `/[]$#%>]\s*$/` will probably work in most cases. (I hate to even include a ']' in there but some people use it.) For `/bin/sh`, `$` and `#` are by far the most common prompt endings, with or without following space. -sauoq "My two cents aren't worth a dime.";	[reply]
Re: reg ex and the prompt by tedrek (Pilgrim) on Jun 04, 2003 at 02:36 UTC
as pzbagel suggested check the return of spawn to see if it worked. Then if you will still need to match the prompt later just set it yourself that way you know what it will be. send "PS1='PROMPT$'" to the shell to set it.	[reply]