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I have tried to use sed (Stream Editor) in BL3.50 but get strange 
errors. E.g.
ps -A | sed ':a;N;$!ba;s/\n//g'
doesn't do anything visible (it should remove newlines).

This doesn't work on sed in BL3.50:
ps -A | sed -e ':a' -e N -e '$!ba' -e 's/\n//g'
One gets the error: 'sed: duplicate label :a'

These works with gsed (GNU sed v3.02) and SEd on BusyBox v1.4.2.

This works on all tested seds:
ps -A | sed ':a
N
$!ba
s/\n//g'

But is a bit long.

If one only wanted to solve this problem one could use:
ps -A | tr -d '\n'

But I want to use loops in one line scripts.

Do you know which version of sed is in BL3.50? Do you know where the 
source code is?

--
// Mikael