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Full Discussion: Grep not working - special characters??
Top Forums Shell Programming and Scripting Grep not working - special characters?? Post 302220311 by Franklin52 on Thursday 31st of July 2008 11:22:54 AM
Old 07-31-2008
It should works with spaces, also try to exclude the TAB within the brackets. To get a TAB, first press <Ctr>-V and then the TAB key.
If you want to convert the space first to another character be sure that this character should not be in your file.
An example to convert the space to an underscore and back to a space:

Code:
 sed -e 's/ /_/g' file -e 's/[^a-zA-Z0-9_]//g' -e 's/_/ /g'

 

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LEARN ABOUT REDHAT

pr

PR(1)									FSF								     PR(1)

NAME

       pr - convert text files for printing

SYNOPSIS

       pr [OPTION]... [FILE]...

DESCRIPTION

       Paginate or columnate FILE(s) for printing.

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

       +FIRST_PAGE[:LAST_PAGE], --pages=FIRST_PAGE[:LAST_PAGE]
	      begin [stop] printing with page FIRST_[LAST_]PAGE

       -COLUMN, --columns=COLUMN
	      output COLUMN columns and print columns down, unless -a is used. Balance number of lines in the columns on each page.

       -a, --across
	      print columns across rather than down, used together with -COLUMN

       -c, --show-control-chars
	      use hat notation (^G) and octal backslash notation

       -d, --double-space
	      double space the output

       -D, --date-format=FORMAT
	      use FORMAT for the header date

       -e[CHAR[WIDTH]], --expand-tabs[=CHAR[WIDTH]]
	      expand input CHARs (TABs) to tab WIDTH (8)

       -F, -f, --form-feed
	      use form feeds instead of newlines to separate pages (by a 3-line page header with -F or a 5-line header and trailer without -F)

       -h HEADER, --header=HEADER
	      use a centered HEADER instead of filename in page header, -h "" prints a blank line, don't use -h""

       -i[CHAR[WIDTH]], --output-tabs[=CHAR[WIDTH]]
	      replace spaces with CHARs (TABs) to tab WIDTH (8)

       -J, --join-lines
	      merge full lines, turns off -W line truncation, no column alignment, --sep-string[=STRING] sets separators

       -l PAGE_LENGTH, --length=PAGE_LENGTH
	      set the page length to PAGE_LENGTH (66) lines (default number of lines of text 56, and with -F 63)

       -m, --merge
	      print all files in parallel, one in each column, truncate lines, but join lines of full length with -J

       -n[SEP[DIGITS]], --number-lines[=SEP[DIGITS]]
	      number lines, use DIGITS (5) digits, then SEP (TAB), default counting starts with 1st line of input file

       -N NUMBER, --first-line-number=NUMBER
	      start counting with NUMBER at 1st line of first page printed (see +FIRST_PAGE)

       -o MARGIN, --indent=MARGIN
	      offset each line with MARGIN (zero) spaces, do not affect -w or -W, MARGIN will be added to PAGE_WIDTH

       -r, --no-file-warnings
	      omit warning when a file cannot be opened

       -s[CHAR],--separator[=CHAR]
	      separate	columns by a single character, default for CHAR is the <TAB> character without -w and 'no char' with -w -s[CHAR] turns off
	      line truncation of all 3 column options (-COLUMN|-a -COLUMN|-m) except -w is set

       -SSTRING, --sep-string[=STRING]
	      separate columns by STRING, without -S: Default separator <TAB> with -J and <space> otherwise (same as -S" "), no effect	on  column
	      options

       -t, --omit-header omit page headers and trailers

       -T, --omit-pagination
	      omit page headers and trailers, eliminate any pagination by form feeds set in input files

       -v, --show-nonprinting
	      use octal backslash notation

       -w PAGE_WIDTH, --width=PAGE_WIDTH
	      set page width to PAGE_WIDTH (72) characters for multiple text-column output only, -s[char] turns off (72)

       -W PAGE_WIDTH, --page-width=PAGE_WIDTH
	      set page width to PAGE_WIDTH (72) characters always, truncate lines, except -J option is set, no interference with -S or -s

       --help display this help and exit

       --version
	      output version information and exit

       -T implied by -l nn when nn <= 10 or <= 3 with -F. With no FILE, or when FILE is -, read standard input.

AUTHOR

       Written by Pete TerMaat and Roland Huebner.

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 pr is maintained as a Texinfo manual.  If the info and pr programs are properly installed at your site, the com-
       mand

	      info pr

       should give you access to the complete manual.

pr (coreutils) 4.5.3						   February 2003							     PR(1)
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