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Full Discussion: Pass variable to sed?
Top Forums Shell Programming and Scripting Pass variable to sed? Post 18964 by kristy on Thursday 4th of April 2002 01:14:03 PM
Old 04-04-2002
Pass variable to sed?
Hi there. If variables are named inside of a ksh script, how is it possible to pass these to sed?

The affected portion of my script goes something like this:

Code:
A=`cut -d. -f1 $FILE`
B=`cut -d. -f2 $FILE`
C=`cut -d. -f3 $FILE`

sed 's/1111/$A/g;s/2222/$B/g;s/3333/$C/g' file > anotherfile

now, I understand that the single quote prevents the shell from interpreting special characters, but if I omit it, the process just hangs there.

Thanks,
kristy

(working with Solaris)
Last edited by Yogesh Sawant; 10-19-2010 at 08:21 AM.. Reason: added code tags
 

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LEARN ABOUT LINUX

cut

CUT(1)								   User Commands							    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
	      select only these bytes

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

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

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

       -n     (ignored)

       --complement
	      complement the set of selected bytes, characters or fields

       -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.  Selected input is written
       in the same order that it is read, and is written exactly once.	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 M. Ihnat, David MacKenzie, and Jim Meyering.

REPORTING BUGS

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

	      info coreutils 'cut invocation'

       should give you access to the complete manual.

GNU coreutils 8.5						   February 2011							    CUT(1)
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