Replacing binary data containing & using perl in HPUX 11.11

[badkmail]

Using Perl, I want to search for a binary data containing & and
alphabets and replace with another string. I am getting an error as
put below:

bash-3.2# echo fsdalf&l91Afjkdf | perl -p -e 's/l91A/l2A/g;'
[1] 11326
fsdalf
bash: l91Afjkdf: command not found
[1]+ Done echo fsdalf
bash-3.2#

My requirement is: I have a binary data which can contain any byte
from 0x00 to 0xFF. I want to search for particular set of characters,
say &A12B and replace it with another set of characters, say &A4B.

Please let me know how to do the same. Thanks in advance.

 

[Peter Makholm]

bash-3.2# echo fsdalf&l91Afjkdf | perl -p -e 's/l91A/l2A/g;'
[1] 11326
fsdalf
bash: l91Afjkdf: command not found
[1]+ Done echo fsdalf
bash-3.2#

This is not at perl issue, but you shell using the ampersand as part
of it's syntax. You'll have to quote the argument to echo:

$ echo 'fsdalf&l91Afjkdf' | perl -p -e 's/l91A/l2A/g;'
fsdalf&l2Afjkdf
$


//Makholm

 

[Sherm Pendley]

Using Perl, I want to search for a binary data containing & and
alphabets and replace with another string. I am getting an error as
put below:

bash-3.2# echo fsdalf&l91Afjkdf | perl -p -e 's/l91A/l2A/g;'
[1] 11326
fsdalf
bash: l91Afjkdf: command not found
[1]+ Done echo fsdalf
bash-3.2#

That's not a Perl error - bash is interpreting the & as the end of a
command. You need to quote shell command arguments that include things
like that:

sherm:~ sherm$ echo fsdalf&191Afjkdf | perl -p -e 's/191A/12A/g;'
[1] 11387
fsdalf
-bash: 191Afjkdf: command not found
[1]+ Done echo fsdalf

sherm:~ sherm$ echo "fsdalf&191Afjkdf" | perl -p -e 's/191A/12A/g;'
fsdalf&12Afjkdf

sherm--

 

[badkmail]

Thanks Sherm and Peter. I have another query. I have seen in some
places the constants ', & etc being used. I googled and found
that these are HTML constants. Is my understanding correct? and how is
it possible to use these with perl?

 

[Jürgen Exner]

I have seen in some
places the constants ', & etc being used. I googled and found
that these are HTML constants. Is my understanding correct?

They are called "Character entity references", please see
http://www.w3.org/TR/html401/charset.html#entities

and how is it possible to use these with perl?

You don't because Perl neither knows nor cares about them.
To Perl those are just pieces of ordinary text.

jue

 

[RedGrittyBrick]

Thanks Sherm and Peter. I have another query. I have seen in some
places the constants ', & etc being used. I googled and found
that these are HTML constants. Is my understanding correct? and how is
it possible to use these with perl?

use HTML::Entities;