SED remove pathlike string from file

[UsRb]

Hi2all,

if I have string "/mbu/data/cms" and I want to delete line that contains that string, I would do following:

variable i is automatically created from another file:
$i=/mbu/data/cms

sed "/$i/d" file

Ouput is "sed: 0602-410 The first regular expression cannot be null." because of slashes (/). How can I tell sed this is the complete string?

 

[feherke]

Hi

Escape the slashes ( / ) in variable $i's value with backslashes ( \ ).

If you tell us what kind of shell are you using, we could help with some code too.

Feherke.

http://rootshell.be/~feherke/

 

[UsRb]

I'm using Korn shell.

Problem is I cannot define variable myself, it is defined from another file while reading it.

 

[feherke]

Hi

sed "/${i//\//\\/}/d"

Tested with MirOS [tt]ksh[/tt].

Or this should work with any Bourne-compatible shell :

grep -v "$i"

Feherke.

http://rootshell.be/~feherke/

 

[UsRb]

First code doesn't work, I'm on AIX.

I've managed to combine your second code in my script.

Thank you

 

[feherke]

Hi

First code doesn't work, I'm on AIX.

Then you have [tt]ksh[/tt] 88. That parameter expansion is [tt]ksh[/tt] 93 feature.

Feherke.

http://rootshell.be/~feherke/

 

[UsRb]

That is correct.

 

[Mike042]

I don't think you are restricted to just using "/" as the delimeter. Try "!" or "?". As in:

sed "!$i!d" file


I hope that helps.

Mike

 

[feherke]

Hi

I don't think you are restricted to just using "/" as the delimeter. Try "!" or "?".

At least in my GNU [tt]sed[/tt] that is valid only for substitution. :-(

Feherke.

http://rootshell.be/~feherke/

 

[Mike042]

Sorry, perhaps I should have tested it properly before making the suggestion. How about this for an idea?

$i1=`echo $i | sed 's!/!.!g'` # ie replace all "/" with "."
sed "/$i1/d" file


I hope that helps.

Mike

 

[feherke]

Hi

Then I would skip [tt]sed[/tt] :

awk -vi="$i" '$0!~i'

Feherke.

http://rootshell.be/~feherke/