09-24-2017
That's not a back reference, but one on the
s command's flags following the replacement.
info sed:
Quote:
FLAGS:
'g'__________Apply the replacement to _all_ matches to the REGEXP, not just the first.
'NUMBER' __Only replace the NUMBERth match of the REGEXP.
Last edited by RudiC; 09-24-2017 at 07:48 AM..
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PTX(1) User Commands PTX(1)
NAME
ptx - produce a permuted index of file contents
SYNOPSIS
ptx [OPTION]... [INPUT]... (without -G)
ptx -G [OPTION]... [INPUT [OUTPUT]]
DESCRIPTION
Output a permuted index, including context, of the words in the input files.
Mandatory arguments to long options are mandatory for short options too.
-A, --auto-reference
output automatically generated references
-G, --traditional
behave more like System V `ptx'
-F, --flag-truncation=STRING
use STRING for flagging line truncations
-M, --macro-name=STRING
macro name to use instead of `xx'
-O, --format=roff
generate output as roff directives
-R, --right-side-refs
put references at right, not counted in -w
-S, --sentence-regexp=REGEXP
for end of lines or end of sentences
-T, --format=tex
generate output as TeX directives
-W, --word-regexp=REGEXP
use REGEXP to match each keyword
-b, --break-file=FILE
word break characters in this FILE
-f, --ignore-case
fold lower case to upper case for sorting
-g, --gap-size=NUMBER
gap size in columns between output fields
-i, --ignore-file=FILE
read ignore word list from FILE
-o, --only-file=FILE
read only word list from this FILE
-r, --references
first field of each line is a reference
-t, --typeset-mode - not implemented -
-w, --width=NUMBER
output width in columns, reference excluded
--help display this help and exit
--version
output version information and exit
With no FILE or if FILE is -, read Standard Input. `-F /' by default.
AUTHOR
Written by F. Pinard.
REPORTING BUGS
Report ptx bugs to bug-coreutils@gnu.org
GNU coreutils home page: <http://www.gnu.org/software/coreutils/>
General help using GNU software: <http://www.gnu.org/gethelp/>
Report ptx translation bugs to <http://translationproject.org/team/>
COPYRIGHT
Copyright (C) 2010 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.
SEE ALSO
The full documentation for ptx is maintained as a Texinfo manual. If the info and ptx programs are properly installed at your site, the
command
info coreutils 'ptx invocation'
should give you access to the complete manual.
GNU coreutils 8.5 February 2011 PTX(1)