doing a sed with variables Post: 70975

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doing a sed with variables

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Hi guys, I want to replace certain values with the number 1. But it is also replacing other values which contain the value I want to replace. e.g.: I want to replace ID-INTERNAL with 1, that's no problem but it will also replace ID-INTERNAL-NON-REM with 1-NON-REM I don't want to...

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when i do something like substituting a particular thing with a system variable, i am unable to do that expect the varible name getting into that. for ex.. i tried, sed -e 's/date/`date`/g' <if >of but i got date replaced with "`date`" and not with the actual date .. same case happened...

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Hi, I am able to use sed if I hardcode the find and replace values in a shell script. This works: sed -e 's/123v/4567/g' /path/aaa.txt > /path/aaa.txt.tmp If I use a variable, I am not able to use sed command. why? This doesnot work: i=abc j=bk${i} sed -e 's/${i}/${j}/g'...

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Is it possible to place a variable in a sed command as such? sed 's/ret_Priv()/$var/' <filename> I am doing this under Bourne.

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All I am trying to produce the following in /etc/ssh/sshd_config, # IPv4 only #ListenAddress 0.0.0.0 # IPv4 & IPv6 ListenAddress :: to # IPv4 only ListenAddress <user-entry> ListenAddress <user-entry> # IPv4 & IPv6 #ListenAddress :: The number of user entries can vary. ...

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Im trying to use sed to print value that matches the value in variable and all lines after that. grep "Something" test.txt | sed -e '/{$variable}/,$b' -e 'd' I cant get it work, if I replace the $variable with the value it contains, it works fine...

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read

read(1) 						      General Commands Manual							   read(1)

NAME

       read - read a line from standard input

SYNOPSIS

       var ...

DESCRIPTION

       reads  a single line from standard input.  The line is split into fields as when processed by the shell (refer to shells in the first field
       is assigned to the first variable var, the second field to the second variable var, and so forth.  If there are more fields than there  are
       specified  var  operands,  the remaining fields and their intervening separators are assigned to the last var.  If there are more vars than
       fields, the remaining vars are set to empty strings.

       The setting of variables specified by the var operands affect the current shell execution environment.

       Standard input to can be redirected from a text file.

       Since affects the current shell execution environment, it is usually provided as a normal shell special (built-in) command.  Thus, if it is
       called  in  a  subshell	or  separate utility execution environment similar to the following, it does not affect the shell variables in the
       caller's environment:

   Options
       recognizes the following options:

	      Do not treat a backslash character in any special way.
		     Consider each backslash to be part of the input line.

   Opperands
       recognizes the following operands:

	      var    The name of an existing or nonexisting shell variable.

EXTERNAL INFLUENCES

   Environment Variables
       determines the internal field separators used to delimit fields.

RETURN VALUE

       exits with one of the following values:

	       0     Successful completion.

	      >0     End-of-file was detected or an error occurred.

EXAMPLES

       Print a file with the first field of each line moved to the end of the line.

	      while read -r xx yy
	      do
		      printf "%s %s 
" "$yy" "$xx"
	      done < input_file

SEE ALSO

       csh(1), ksh(1), sh(1), sh-posix(1).

STANDARDS CONFORMANCE

																	   read(1)

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