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 replace that.
I tought of doing grep -w ID-INTERNAL but that still returns both any ideas ?

You can use sed itself.

Try this out

sed -e 's/ID-INTERNAL /1 /g'

no didnt work,

because I might have an instance of ID-INTERNAL,

Try this...

sed -e 's/ID-INTERNAL /1 /g' -e 's/ID-INTERNAL[^-]/1/g' -e 's/ID-INTERNAL$/1/g' $filename

Thanks for that it works now, any chance you could explain what you exactly did please ?

Here goes the explaination...

sed -e 's/ID-INTERNAL /1 /g' -e 's/ID-INTERNAL[^-]/1/g' -e 's/ID-INTERNAL$/1/g' $filename


the first replace will make replace only those where space is the next character then we replace all other then '-' characters then comes provision for if the next character being newline assuming your variable ends the line it is in.

hope its clear, if not pls lemme know.

This was required to do so..as we need to prioritze and replace, there could be a better way to achieve this say with only one expression..but this is what i could come up at first instance and posted...

if any better suggestions with anyone...do share...

Thanks