Using SED to get n chars after given value from file Post: 302151738

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Extracting the last 3 chars from a string using sed

Hi. Can I extract the last 3 characters from a given string using sed ? Why the following doesn't work (it prints the full string) : echo "abcd" | sed '/\.\.\.$/p' doesn't work ? output: abcd Thanks in advance, 435 Gavea.

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I know this has been asked previously on this forum...But I think I have a different scenario to present. I ahve a file tht looks like this (note:there are control Z and other chars tht are not visible on line with anme bowers) BB7118450 6004718 BIANCALANA =HEI BZ5842819 ...

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Hi, INPUT: DCBADD OUTPUT: ABCD The SED script should alphabetically sort the chars in the string and remove the duplicate chars.

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LEARN ABOUT DEBIAN

linux-version

LINUX-VERSION(1)					      General Commands Manual						  LINUX-VERSION(1)

NAME

       linux-version - operate on Linux kernel version strings

SYNOPSIS

       linux-version compare VERSION1 OP VERSION2

       linux-version sort [--reverse] [VERSION1 VERSION2 ...]

       linux-version list [--paths]

DESCRIPTION

       linux-version operates on Linux kernel version strings as reported by uname -r and used in file and directory names.  These version strings
       do not follow the same rules as Debian package version strings and should not be compared as such or as arbitrary strings.

       compare VERSION1 OP VERSION2
	      Compare version strings, where OP is a binary operator. linux-version returns success (zero result) if the  specified  condition	is
	      satisfied, and failure (nonzero result) otherwise.  The valid operators are: lt le eq ne ge gt

       sort [--reverse] [VERSION1 VERSION2 ...]
	      Sort the given version strings and print them in order from lowest to highest.  If the --reverse option is used, print them in order
	      from highest to lowest.

	      If no version strings are given as arguments, the version strings will instead be read from standard input, one per line.  They  may
	      be suffixed by arbitrary text after a space, which will be included in the output.  This means that, for example:

	      linux-version list --paths | linux-version sort --reverse

	      will list the installed versions and corresponding paths in order from highest to lowest version.

       list [--paths]
	      List kernel versions installed in the customary location.  If the --paths option, show the corresponding path for each version.

AUTHOR

       linux-version and this manual page were written by Ben Hutchings as part of the Debian linux-base package.

								   30 March 2011						  LINUX-VERSION(1)

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Extracting the last 3 chars from a string using sed

Discussion started by: 435 Gavea

2. Shell Programming and Scripting

Replace Junk chars (Sed)

Discussion started by: alfredo123

3. Shell Programming and Scripting

sed to extract first two uppercase chars in targeted lines

Discussion started by: str8danked

4. Shell Programming and Scripting

sed - how to insert chars into a line

Discussion started by: tangentviper