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Full Discussion: Getting the character count of the last line
Top Forums UNIX for Dummies Questions & Answers Getting the character count of the last line Post 302739319 by Scrutinizer on Tuesday 4th of December 2012 03:43:57 AM
Old 12-04-2012
This would break if there are file names with spaces and/or special characters. To avoid that you would need to use properly quoting:
Code:
print "$FILE"
tail -1 "$FILE"

Also, wc -c only counts bytes, so with multibyte characters you would end up with the wrong number. To avoid that use wc -m. For example:

Code:
$ echo 'eé' | wc -c
       4
$ echo 'eé' | wc -m
       3
$ printf "%s" 'eé' | wc -m
       2

As you can see, they both count the linefeed at the end, you may or may not want that...



--
The semicolon after while read FILE is not necessary...
Last edited by Scrutinizer; 12-04-2012 at 05:57 AM..
These 2 Users Gave Thanks to Scrutinizer For This Post:
MIA651 Yoda
 

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LEARN ABOUT CENTOS

grub2-mkrescue

GRUB-MKRESCUE(3)					     Library Functions Manual						  GRUB-MKRESCUE(3)

NAME

       grub-mkrescue -- Generate a GRUB rescue image using GNU Xorriso.

SYNOPSIS

       grub-mkrescue [-o | --output=FILE] [--modules=MODULES]
		      [--install-modules=MODULES] [--themes=THEMES]
		      [--fonts=FONTS] [--locales=LOCALES]
		      [--compress[=no,xz,gz,lzo]] [-d | --directory=DIR]
		      [--grub-mkimage=FILE] [--rom-directory=DIR]
		      [--xorriso=FILE] [--grub-glue-efi=FILE]
		      [--grub-render-label=FILE] [--label-font=FILE]
		      [--label-color=COLOR] [--label-bgcolor=FILE]
		      [--product-name=STRING] [--product-version=STRING]
		      [--sparc-boot] [--arcs-boot]

DESCRIPTION

       grub-mkrescue can be used to generate a rescue image with the GRUB bootloader.

OPTIONS

       --output=FILE
	      Write the generated file to FILE.  The default is to write to standard output.

       --modules=MODULES
	      Pre-load modules specified by MODULES.

       --install-modules=MODULES
	      Install only MODULES and their dependencies.  The default is to install all available modules.

       --themes=THEMES
	      Install THEMES.  The default is to install the starfield theme, if available.

       --fonts=FONTS
	      Install FONTS.  The default is to install the unicode font.

       --locales=LOCALES
	      Install only locales listed in LOCALES.  The default is to install all available locales.

       --compress[=no,xz,gz,lzo]
	      Compress GRUB files using the specified compression algorithm.

       --directory=DIR
	      Use images and modules in DIR.

       --grub-mkimage=FILE
	      Use FILE as grub-mkimage(1).  The default is /usr/bin/grub-mkimage.

       --rom-directory=DIR
	      Save ROM images in DIR.

       --xorriso=FILE
	      Use FILE as xorriso.

       --grub-glue-efi=FILE
	      Use FILE as grub-glue-efi(3).

       --grub-render-label=FILE
	      Use FILE as grub-render-label(3).

       --label-font=FILE
	      Use FILE as the font file for generated labels.

       --label-color=COLOR
	      Use COLOR as the color for generated labels.

       --label-bgcolor=COLOR
	      Use COLOR as the background color for generated labels.

       --product-name=STRING
	      Use STRING as the product name in generated labels.

       --product-version=STRING
	      Use STRING as the product version in generated labels.

       --sparc-boot
	      Enable booting the SPARC platform.  This disables HFS+, APM, ARCS, and "boot as disk image" on the i386-pc target platform.

       --arcs-boot
	      Enable  ARCS  booting.  This is typically for big-endian MIPS machines, and disables HFS+, APM, sparc64, and "boot as disk image" on
	      the i386-pc target platform.

       --     All options after a -- will be passed directly to xorriso's command line when generating the image.

SEE ALSO

       info grub

								  Wed Feb 26 2014						  GRUB-MKRESCUE(3)
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