SED and variable in a script ksh 2

[loloman]

how to send a variable since a script shell to an instruction sed
ex :
var1=test1
var2=test2
sed '1,$s/$var1/$var2/g'
this expression don't work in my script

 

[dickiebird]

Use single quotes around the variables.

Dickie Bird (-)))

 

[loloman]

it's ok
think you

 

[PHV]

You can play with double quotes in case of embedded space:

var1="My test1"
var2="My test2"
sed '1,$s/'"$var1/$var2/g"

Hope This Help
PH.

 

[RFC1795]

Hi,

To follow onto the above question. How do I get away with using a variable in sed that contains a slash?
Eg

var1="ethernet0/0"
sed '1,$s/'"$var1/TEST/g"

This gives me an output of :
sed: command garbled: 1,$s/ethernet0/0/TEST/g

My aim is to used sed to give me just the paragraph between var1 and whatever like so:
sed -n '/$var1/,/whatever/p'

Any ideas, or perhaps a better way to perform the task?

Thanks .. TJ

 

[PHV]

Try something like this:

var1="ethernet0/0"
sed '1,$s!'"$var1!TEST!g"

Hope This Help
PH.

 

[RFC1795]

Thanks PHV,

That works great for replacing the variable

I can more or less figure out how it works but when I try using your sample to perform sed to display a portion of data then I keep getting errors.

So somewhere in my string based trying to use your working one, something is not right:
sed -n '!'"$var1!,!cdp!p"

I tried moving the ! around , the ` around the " around ;-)
I'm stummped.

Cheers ..TJ