Replacing in SED

superprogrammer · #1 (**permalink**) 07-05-2006

I want to change the false in Node 1 to true. How do I do that?
<Node1>
<Usage>false</Usage>
<Url>ABC</Url>
</Node1>

<Node2>
<Usage>false</Usage>
<Url>DEF<Url>
</Node2>

nir_s · #2 (**permalink**) 07-05-2006

Try:

Code:

/tmp # echo "
> <Node1>
> <Usage>false</Usage>
> <Url>ABC</Url>
> </Node1>
>         
> <Node2>
> <Usage>false</Usage>
> <Url>DEF<Url>
> </Node2>" | sed -e 's/false/true/g'

<Node1>
<Usage>true</Usage>
<Url>ABC</Url>
</Node1>

<Node2>
<Usage>true</Usage>
<Url>DEF<Url>
</Node2>

or:

Code:

sed -e 's/false/true/g' file > file.new

Regards,
Nir

vino · #3 (**permalink**) 07-05-2006

Code:

sed -e "/<Node1>/,/<\/Node1>/{s_<Usage>false</Usage>_<Usage>true</Usage>_}" file.old > file.new

superprogrammer · #4 (**permalink**) 07-05-2006

I am getting command garbled

vgersh99 · #5 (**permalink**) 07-05-2006

Code:

sed 's#<Usage>false#<Usage>true#g' myFile

superprogrammer · #6 (**permalink**) 07-06-2006

Thanks but it converts both the values to true

Remember, I just want to change the value in Node1

grial · #7 (**permalink**) 07-06-2006

Vino's solution does what you want.

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