Remove newline character from a variable

[umeman]

Admins,

I have a variable, $TESTVAR that has a '\n' character in it
how can I remove all space characters and new line characters on either side of this variable value.

Thanks

 

[marrow]

Do you man by what method can you remove them? As in editing the file with
vi and deleting the characters with an x and then saving with wq. Can you be more specific please?

 

[dobbyn]

You can do this with sed, but you may have to know how many newline chars there are. For example:
$ T1="this \nis a \ntest"
$ echo $T1 | sed '{
N
N
s/\n//g
s/ //g
}'

produces: thisisatest

The sed script says: cancatenate the next two lines (the N's), then replace newlines with nothing, then replace spaces with nothing.