Aaron Bliss wrote:
Hi everyone,
I'm trying to figured out how to remove and instance of ^ followed by
and upper case H from a file.When I use tr -d [^H] tr is removing the
sequences with ^ characters as well as any upper case H's found in the
file. Any ideas? thanks.
Aaron
I assume the objective is removal of "^H" sequences (eg ASCII
representation of the BS char) from a string, not necessarily
exploration of the uses of the tr command. If so, try:
[rj@mavis ~]$ sed -e s/"\^H"/""/g
...which is expecting standard input to supply the string. Then, type
(without the quotes) "HHH^H^H^HhhhHHHABCDEFG...", press <enter> and read
the stripped string. Like this:
[rj@mavis ~]$ sed -e s/"\^H"/""/g
HHH^H^H^HhhhHHHABCDEFG...
HHHhhhHHHABCDEFG...
All that remains is to cause sed to operate on a file rather than
standard input.
(Yeah, I know about driving tacks with a sledgehammer but that works a
lot better than driving railroad spikes with a tackhammer.)
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