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Full Discussion: Incrementing ascii values
Top Forums Shell Programming and Scripting Incrementing ascii values Post 302497588 by alister on Thursday 17th of February 2011 03:53:38 PM
Old 02-17-2011
Quote:
Originally Posted by apmcd47
Like this?
Code:
echo This is Something z write home aboutZ | tr 'a-zA-Z' 'b-zA-Za'
Uijt jt Tpnfuijoh A xsjuf ipnf bcpvua

Andrew
Depending on the locale settings, this may or may not do what you expect. For example, in an en_US.UTF-8 locale, a-z expands to aBbCc...YyZz. a-z and A-Z are almost identical in such a locale; a-z covers all letters except for "A", and A-Z covers all letters except for "z".

It's a good idea to explicitly set the applicable locale environment variables in the script when using range expressions.

Regards,
Alister

P.S. While helping to troubleshoot a script a while back, this particular "feature" claimed an hour of my life. NEVER AGAIN! Smilie
Last edited by alister; 02-17-2011 at 05:02 PM..
 

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LEARN ABOUT OPENSOLARIS

locale.conf

LOCALE.CONF(5)							    locale.conf 						    LOCALE.CONF(5)

NAME

       locale.conf - Configuration file for locale settings

SYNOPSIS

       /etc/locale.conf

DESCRIPTION

       The /etc/locale.conf file configures system-wide locale settings. It is read at early boot by systemd(1).

       The basic file format of locale.conf is a newline-separated list of 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 locale.LANG=, locale.LANGUAGE=, locale.LC_CTYPE=, locale.LC_NUMERIC=, locale.LC_TIME=,
       locale.LC_COLLATE=, locale.LC_MONETARY=, locale.LC_MESSAGES=, locale.LC_PAPER=, locale.LC_NAME=, locale.LC_ADDRESS=, locale.LC_TELEPHONE=,
       locale.LC_MEASUREMENT=, locale.LC_IDENTIFICATION= may be used to override the locale settings at boot.

       The locale settings configured in /etc/locale.conf are system-wide and are inherited by every service or user, unless overridden or unset
       by individual programs or individual users.

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

       /etc/vconsole.conf is usually created and updated using systemd-localed.service(8).  localectl(1) may be used to alter the settings in this
       file during runtime from the command line. Use systemd-firstboot(1) to initialize them on mounted (but not booted) system images.

OPTIONS

       The following locale settings may be set using /etc/locale.conf: LANG=, LANGUAGE=, LC_CTYPE=, LC_NUMERIC=, LC_TIME=, LC_COLLATE=,
       LC_MONETARY=, LC_MESSAGES=, LC_PAPER=, LC_NAME=, LC_ADDRESS=, LC_TELEPHONE=, LC_MEASUREMENT=, LC_IDENTIFICATION=. Note that LC_ALL may not
       be configured in this file. For details about the meaning and semantics of these settings, refer to locale(7).

EXAMPLE

       Example 1. German locale with English messages

       /etc/locale.conf:

	   LANG=de_DE.UTF-8
	   LC_MESSAGES=en_US.UTF-8

SEE ALSO

       systemd(1), locale(7), localectl(1), systemd-localed.service(8), systemd-firstboot(1)

systemd 237															    LOCALE.CONF(5)
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