When I run the command:

Code:

printf '%s\n' 'testing_Š_testing' 'testing__testing'|tr -d '\145\147\128-\140'

I get the output:

Code:

tstinŠtstintstintstin$

(Note that the $ at the end of the output is my shell's prompt. The arguments you are giving to tr are treated as octal values (not decimal), \145 is the character e; \147 is the character g; \128 is treated as \12 (the newline character) followed by the character 8; and 8-\140 in ASCII removes the characters 8, 9, all upper-case alphabetic characters, and the [, \, ], ^, _, and ` characters.

And the command:

Code:

printf '%s\n' 'testing_Š_testing' 'testing__testing'|sed -e 's/\d145//g' -e 's/\d147//g'  -e s'/\d128-\d140//g'

Produces the output:

Code:

testing_Š_testing
testing__testing
$

because, as I said before, the two byte character Š in UTF-8 is made up of bytes with the decimal values 197 and 160 (neither of which are in your list of byte values to be deleted by the sed command). (Note also that while, \dx (where x is a one, two, or three digit decimal number) works on some systems, it is an extension to the standards and, on many systems, will give you a syntax error or delete the characters d, 0, 1, 4, 5, 7, and 8.)

Please show us the output you get when you run the commands above!

I repeat:
What OS (including version) and shell are you using?

What Locale are you using when you run your script?