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Top Forums Shell Programming and Scripting To Trim spaces at the end of line Post 302105268 by sbasetty on Wednesday 31st of January 2007 08:53:13 PM
Old 01-31-2007
To Trim spaces at the end of line

Hi Friends,

Can any one help with this issue:
How to trim spaces for each line at the end,
Like I have a file in this format.


Code:
EMP1  SMITH 46373 5 STREET HOWARD 74636
EMP2 JONES 5454    { these are spaces ........}
EMP3  SMITH 46373 5 STREET HOWARD 74636
EMP4  JON  2554    { these are spaces ........}
EMP5  GARY 5345    { these are spaces ........}
EMP6  HARRY 454    { these are spaces ........}
EMP7  FRED  73       45 STREET FOLSUM 74636

I would like to trim spaces for each line at the end for each line:

It should look like this:
Code:
EMP1  SMITH 46373 5 STREET HOWARD 74636
EMP2 JONES 5454
EMP3  SMITH 46373 5 STREET HOWARD 74636
EMP4  JON  2554
EMP5  GARY 5345
EMP6  HARRY 454
EMP7  FRED  73       45 STREET FOLSUM 74636



Thanks in advance.

S Smilie
 

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textutil::trim(n)				    Text and string utilities, macro processing 				 textutil::trim(n)

__________________________________________________________________________________________________________________________________________________

NAME
textutil::trim - Procedures to trim strings SYNOPSIS
package require Tcl 8.2 package require textutil::trim ?0.7? ::textutil::trim::trim string ?regexp? ::textutil::trim::trimleft string ?regexp? ::textutil::trim::trimright string ?regexp? ::textutil::trim::trimPrefix string prefix ::textutil::trim::trimEmptyHeading string _________________________________________________________________ DESCRIPTION
The package textutil::trim provides commands that trim strings using arbitrary regular expressions. The complete set of procedures is described below. ::textutil::trim::trim string ?regexp? Remove in string any leading and trailing substring according to the regular expression regexp and return the result as a new string. This is done for all lines in the string, that is any substring between 2 newline chars, or between the beginning of the string and a newline, or between a newline and the end of the string, or, if the string contain no newline, between the beginning and the end of the string. The regular expression regexp defaults to "[ \t]+". ::textutil::trim::trimleft string ?regexp? Remove in string any leading substring according to the regular expression regexp and return the result as a new string. This apply on any line in the string, that is any substring between 2 newline chars, or between the beginning of the string and a newline, or between a newline and the end of the string, or, if the string contain no newline, between the beginning and the end of the string. The regular expression regexp defaults to "[ \t]+". ::textutil::trim::trimright string ?regexp? Remove in string any trailing substring according to the regular expression regexp and return the result as a new string. This apply on any line in the string, that is any substring between 2 newline chars, or between the beginning of the string and a newline, or between a newline and the end of the string, or, if the string contain no newline, between the beginning and the end of the string. The regular expression regexp defaults to "[ \t]+". ::textutil::trim::trimPrefix string prefix Removes the prefix from the beginning of string and returns the result. The string is left unchanged if it doesn't have prefix at its beginning. ::textutil::trim::trimEmptyHeading string Looks for empty lines (including lines consisting of only whitespace) at the beginning of the string and removes it. The modified string is returned as the result of the command. BUGS, IDEAS, FEEDBACK This document, and the package it describes, will undoubtedly contain bugs and other problems. Please report such in the category textutil of the Tcllib SF Trackers [http://sourceforge.net/tracker/?group_id=12883]. Please also report any ideas for enhancements you may have for either package and/or documentation. SEE ALSO
regexp(n), split(n), string(n) KEYWORDS
prefix, regular expression, string, trimming textutil 0.7 textutil::trim(n)
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