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Full Discussion: Help on grep syntax in UNIX
Top Forums Shell Programming and Scripting Help on grep syntax in UNIX Post 303008229 by Don Cragun on Wednesday 29th of November 2017 06:33:46 AM
Old 11-29-2017
Since many versions of awk do not include a sorting function and you seem to want sorted output (although it isn't clear if you want unique sorted output or just need sort to get unique output), you might try a simpler pipeline:
Code:
BL_LAYER=`ls *session*log | cut -d'.' -f1  | sort -u | paste -s -d, -`
echo "Business Layer are :- $BL_LAYER"

If the cut in this pipeline is just getting rid of .log at the end of your filenames, the sort -u can be removed from the pipeline and you'll still get the same results.

Note that the above pipeline uses a comma as the separator between filenames instead of the <tab> used as the default by paste. If you want the delimiter to be <comma><space> sometimes and just <comma> sometimes (as in your latest ";i'expected output to print[/i]"), you'll need to find another way to do that. (The paste utility only uses single characters as field delimiters, and you'll need to very clearly define the conditions under which each of the various delimiters you want to use are supposed to be chosen as the delimiter between output filenames!)
 

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LEARN ABOUT REDHAT

cut

CUT(1)									FSF								    CUT(1)

NAME

       cut - remove sections from each line of files

SYNOPSIS

       cut [OPTION]... [FILE]...

DESCRIPTION

       Print selected parts of lines from each FILE to standard output.

       Mandatory arguments to long options are mandatory for short options too.

       -b, --bytes=LIST
	      output only these bytes

       -c, --characters=LIST
	      output only these characters

       -d, --delimiter=DELIM
	      use DELIM instead of TAB for field delimiter

       -f, --fields=LIST
	      output only these fields;  also print any line that contains no delimiter character, unless the -s option is specified

       -n     with -b: don't split multibyte characters

       -s, --only-delimited
	      do not print lines not containing delimiters

       --output-delimiter=STRING
	      use STRING as the output delimiter the default is to use the input delimiter

       --help display this help and exit

       --version
	      output version information and exit

       Use one, and only one of -b, -c or -f.  Each LIST is made up of one range, or many ranges separated by commas.  Each range is one of:

       N      N'th byte, character or field, counted from 1

       N-     from N'th byte, character or field, to end of line

       N-M    from N'th to M'th (included) byte, character or field

       -M     from first to M'th (included) byte, character or field

       With no FILE, or when FILE is -, read standard input.

AUTHOR

       Written by David Ihnat, David MacKenzie, and Jim Meyering.

REPORTING BUGS

       Report bugs to <bug-coreutils@gnu.org>.

COPYRIGHT

       Copyright (C) 2002 Free Software Foundation, Inc.
       This is free software; see the source for copying conditions.  There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICU-
       LAR PURPOSE.

SEE ALSO

       The full documentation for cut is maintained as a Texinfo manual.  If the info and cut programs are properly installed at  your	site,  the
       command

	      info cut

       should give you access to the complete manual.

cut (coreutils) 4.5.3						   February 2003							    CUT(1)
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