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Full Discussion: Why does my /bin/csh take longer than /bin/perl?
Top Forums Shell Programming and Scripting Why does my /bin/csh take longer than /bin/perl? Post 302275841 by cfajohnson on Monday 12th of January 2009 09:59:06 AM
Old 01-12-2009
Quote:
Originally Posted by acheong87
Okay, so I have two "Hello, world!" scripts, "test.pl" and "test.sh".
Code:
#!/bin/perl -w
use strict;
print "Hello, world!\n";

Code:
#!/bin/csh
echo Hello,\ world!

When I run test.pl, it runs instantly, always. When I run test.sh, it takes anywhere between 4 and 22 seconds!

The same script is a shell that is designed for scripting (i.e., a POSIX shell, such as bash, ash, dash or ksh) takes much less time than csh and quite likely less than perl.

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LEARN ABOUT POSIX

vconsole.conf

VCONSOLE.CONF(5)						   vconsole.conf						  VCONSOLE.CONF(5)

NAME

       vconsole.conf - configuration file for the virtual console

SYNOPSIS

       /etc/vconsole.conf

DESCRIPTION

       The /etc/vconsole.conf file configures the virtual console, i.e. keyboard mapping and console font.

       The basic file format of the vconsole.conf is a newline-separated list environment-like shell-compatible variable assignments. It is
       possible to source the configuration from shell scripts, however, beyond mere variable assignments no shell features are supported,
       allowing applications to read the file without implementing a shell compatible execution engine.

       Note that the kernel command line options vconsole.keymap=, vconsole.keymap.toggle=, vconsole.font=, vconsole.font.map=,
       vconsole.font.unimap= may be used to override the console settings at boot.

       Depending on the operating system other configuration files might be checked for configuration of the virtual console as well, however only
       as fallback.

OPTIONS

       The following options are understood:

       KEYMAP=, KEYMAP_TOGGLE=
	   Configures the key mapping table of for they keyboard.  KEYMAP= defaults to us if not set. The KEYMAP_TOGGLE= can be used to configured
	   a second toggle keymap and is by default unset.

       FONT=, FONT_MAP=, FONT_UNIMAP=
	   Configures the console font, the console map and the unicode font map.  FONT= defaults to latarcyrheb-sun16.

EXAMPLE

       Example 1. German keyboard and console

       /etc/vconsole.conf:

	   KEYMAP=de-latin1
	   FONT=latarcyrheb-sun16

SEE ALSO

       systemd(1), loadkeys(1), setfont(8), locale.conf(5)

AUTHOR

       Lennart Poettering <lennart@poettering.net>
	   Developer

systemd 							    10/07/2013							  VCONSOLE.CONF(5)
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