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Full Discussion: SED: Replacing $1 with $2 escape problem
Top Forums Shell Programming and Scripting SED: Replacing $1 with $2 escape problem Post 302262616 by Christoph Spohr on Friday 28th of November 2008 06:38:52 AM
Old 11-28-2008
Oh no, don't do that. You need no function at all. Use

Code:
s#var_a#var_b#g

or every other character you like which you will not likely encouter
in the string instead.

With gnu linux and sed there is no problem at all:

Code:
c="/bells/ & /whistles/"    
d=$(printf "%q" $c)         
sed "s#bells#${d}#" <<< $c

And will give you:

Code:
//bells/ & /whistles// & /whistles/

But as Franklin52 pointed it would be the best to give us some examples
of what you have and what you want.

HTH Chris
 

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LEARN ABOUT DEBIAN

rscript

Rscript(1)								FSF								Rscript(1)

NAME

       Rscript - front end for scripting with R

SYNOPSIS

       Rscript [--options] [-e expr] file [args]

DESCRIPTION

       A binary front-end to R, for use in scripting applications.

       expr   An optional expression to be evaluated, used in place of expr.

       file   Input file of R expressions

       args   Optional further arguments to be processed by commandArgs in the R interpreter.

OPTIONS

       --options accepted are

       --help Print usage and exit

       --version
	      Print version and exit

       --verbose
	      Print information on progress

       --default-packages=list
	      Where 'list' is a comma-separated set of package names, or 'NULL'

       and also options to R (in addition to --slave --no-restore), such as

       --save Do save workspace at the end of the session

       --no-environ
	      Don't read the site and user environment files

       --no-site-file
	      Don't read the site-wide Rprofile

       --no-init-file
	      Don't read the user R profile

       --restore
	      Do restore previously saved objects at startup

       --vanilla
	      Combine --no-save, --no-restore, --no-site-file --no-init-file and --no-environ

SEE ALSO

       R(1)

R scripting							    April 2007								Rscript(1)
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