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Top Forums Shell Programming and Scripting How to remove newline character if it is the only character in the entire file.? Post 303029479 by rak Kundra on Sunday 27th of January 2019 02:00:39 PM
Old 01-27-2019
How to remove newline character if it is the only character in the entire file.?

I have a file which comes every day and the file data look's as below.


Code:
Vi abc.txt


Code:
a|b|c|d\n
a|g|h|j\n


Some times we receive the file with only a new line character in the file like



Code:
vi abc.txt


Code:
\n



We need to handle the shell script such a way that if the entire file contains only a new line character then remove the new line character else don't touch the file .

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Last edited by Scrutinizer; 01-27-2019 at 03:09 PM..
 

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fribidi_get_mirror_char(3)					Programmer's Manual					fribidi_get_mirror_char(3)

NAME
fribidi_get_mirror_char - get mirrored character SYNOPSIS
#include <fribidi.h> fribidi_boolean fribidi_get_mirror_char ( FriBidiChar ch, FriBidiChar *mirrored_ch ); PARAMETERS
FriBidiChar ch Input character. FriBidiChar *mirrored_ch Output mirrored character. DESCRIPTION
This function finds the mirrored equivalent of a character as defined in the file BidiMirroring.txt of the Unicode Character Database available at http://www.unicode.org/Public/UNIDATA/BidiMirroring.txt. If the input character is a declared as a mirroring character in the Unicode standard and has a mirrored equivalent. The matching mir- rored character is put in the output, otherwise the input character itself is put. RETURNS
If the character has a mirroring equivalent or not. SEE ALSO
fribidi_charset_to_unicode(3), fribidi_unicode_to_charset(3), fribidi_parse_charset(3), fribidi_shape_arabic(3), fribidi_get_par_direc- tion(3), fribidi_get_par_embedding_levels(3), fribidi_reorder_line(3), fribidi_get_bidi_type(3), fribidi_get_bidi_types(3), fribidi_get_bidi_type_name(3), fribidi_debug_status(3), fribidi_mirroring_status(3), fribidi_set_mirroring(3), fribidi_reorder_nsm_sta- tus(3), fribidi_set_reorder_nsm(3), fribidi_log2vis_get_embedding_levels(3), fribidi_get_type(3), fribidi_get_type_internal(3), fribidi_remove_bidi_marks(3), fribidi_log2vis(3), fribidi_join_arabic(3), fribidi_get_joining_type(3), fribidi_get_joining_types(3), fribidi_get_joining_type_name(3), fribidi_shape_mirroring(3), fribidi_shape(3) GNU FriBidi 0.19.2 30 January 2006 fribidi_get_mirror_char(3)
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