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Shell Programming and Scripting
user input in perl?
Post 302595273 by Corona688 on Thursday 2nd of February 2012 01:51:09 PM
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Hello,
I'm running a perl script to execute a program through my Unix command line. The program requires a user input but I want to automatically have perl input the string. Is there a way to do this?
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Hi All,
Can we pass arguments while calling the perl script and as well as ask user input during execution of the script?
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If I want all user input to start with " : " if not display error
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My question is basically as the title says. How can I check a user inputted string is only certain characters long (for example, 3 characters long) and how do I check a user inputted string only contains certain characters (for example, it should only contain the characters 'u', 'a', 'g', and 'c')... (4 Replies)
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LEARN ABOUT DEBIAN
ysh
YSH(1p) User Contributed Perl Documentation YSH(1p) NAME
ysh - The YAML Test Shell SYNOPSIS
ysh [options] DESCRIPTION
This program is designed to let you play with the Perl YAML modules in an interactive way. When you to type in Perl, you get back YAML. And vice versa. By default, every line you type is a one line Perl program, the return value of which will be displayed as YAML. To enter multi-line Perl code start the first line with ';' and use as many lines as needed. Terminate with a line containing just ';'. To enter YAML text, start with a valid YAML separator/header line which is typically '---'. Use '===' to indicate that there is no YAML header. Enter as many lines as needed. Terminate with a line containing just '...'. To read in and process an external YAML file, enter '< filename'. The ysh will also work as a standalone filter. It will read anything on STDIN as a YAML stream and write the Perl output to STDOUT. You can say (on most Unix systems): cat yaml.file | ysh | less COMMAND LINE OPTIONS
-MYAML::Module Set the YAML implementation module you wish. -l Keep a log of all ysh activity in './ysh.log'. If the log file already exists, new content will be concatenated to it. -L Keep a log of all ysh activity in './ysh.log'. If the log file already exists, it will be deleted first. -r Test roundtripping. Every piece of Perl code entered will be Dumped, Loaded, and Dumped again. If the two stores do not match, an error message will be reported. -R Same as above, except that a confirmation message will be printed when the roundtrip succeeds. -i<number> Specify the number of characters to indent each level. This is the same as setting $YAML::Indent. -ub Shortcut for setting '$YAML::UseBlock = 1'. Force multiline scalars to use 'block' style. -uf Shortcut for setting '$YAML::UseFold = 1'. Force multiline scalars to use 'folded' style. -uc Shortcut for setting '$YAML::UseCode = 1'. Allows subroutine references to be processed. -nh Shortcut for setting '$YAML::UseHeader = 0'. -nv Shortcut for setting '$YAML::UseVersion = 0'. -v Print the versions of ysh and the YAML implementation module in use. -V In addition to the -v info, print the versions of YAML related modules. -h Print a help message. YSH_OPT If you don't want to enter your favorite options every time you enter ysh, you can put the options into the "YSH_OPT" environment variable. Do something like this: export YSH_OPT='-i3 -uc -L' SEE ALSO
YAML AUTHOR
Ingy doet Net <ingy@cpan.org> COPYRIGHT
Copyright (c) 2006, 2008. Ingy doet Net. Copyright (c) 2001, 2002. Brian Ingerson. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. See <http://www.perl.com/perl/misc/Artistic.html> perl v5.10.1 2008-12-01 YSH(1p)