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Full Discussion: User input - Perl need Help
Top Forums Shell Programming and Scripting User input - Perl need Help Post 302556723 by durden_tyler on Monday 19th of September 2011 11:16:31 AM
Old 09-19-2011
Quote:
Originally Posted by guidely
If I want all user input to start with " : " if not display error
...
Maybe something like this?

Code:
$
$
$ perl -lne 'die if !/^ : /; print "You entered => \"$_\""'
 : hello
You entered => " : hello"
 : world
You entered => " : world"
 : the quick brown fox jumps over the lazy dog
You entered => " : the quick brown fox jumps over the lazy dog"
inigo montoya
Died at -e line 1, <> line 4.
$
$
$

tyler_durden
 

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MONGO(1)							  Mongo Database							  MONGO(1)

NAME
mongo - the Mongo command-line tool SYNOPSIS
mongo [OPTIONS] [DB_ADDRESS] [FILE+] DESCRIPTION
mongo is a JavaScript shell (with GNU readline capabilities). It supports interactive and non-interactive use. When used interactively, JavaScript can be used to query the database or perform any other function normally available with SpiderMonkey. Database output is dis- played in JSON format. If JavaScript files are specified on the command line, the shell will run non-interactively, running each one in sequence and then exiting. EXAMPLES
mongo start the shell, connecting to the server at localhost:27017 and using the test database mongo foo start the shell using the foo database at localhost:27017 mongo 192.169.0.5/foo start the shell using the foo database at 192.169.0.5:27017 mongo 192.169.0.5:9999/foo start the shell using the foo database at 192.169.0.5:9999 mongo script1.js script2.js script3.js run three scripts and exit OPTIONS
--shell run the shell after executing files --help show usage information --host HOST server to connect to (default HOST=localhost) --port PORT port to connect to (default PORT=27017) --nodb do not connect to mongod --eval SCRIPT evaluate JavaScript -u USERNAME specify user to log in as -pPASSWORD specify password of user (notice there is no space) COPYRIGHT
Copyright 2007-2009 10gen SEE ALSO
For more information, please refer to the MongoDB wiki, available at http://www.mongodb.org. AUTHOR
Kristina Chodorow 10gen June 2009 MONGO(1)
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