08-23-2013
Quote:
Originally Posted by
Corona688
Please explain how he's going to read a line without it.
I did not say that read(2) is not necessary, only that it is irrelevant. What's relevant to correctly counting the number of characters in a line is the correct locale and inspection by a locale-aware interface, such as mbrtowc(3) and friends. Using -m provides the latter.
By the way, none of the OP's posts mention reading a fixed quantity (and none use the word byte). The very solution you were assisting with, head piped into wc, makes it clear that a fixed-size read is not part of the equation.
Regards,
Alister
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LEARN ABOUT V7
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)