Is there an easy way using bash INTERNALS to do the following:
Read in a file containing two numbers on one line separated by
space, and replace the whitespace between them with a ":"?
I'm trying to optimize some stuff in a script and trying to get
rid of awk/sed/perl calls that are unnecessary.
The input file contains:
2345 5678
I'd like something along the lines of:
DATA=${blahblash} < /somefile
Where ${blahblash} is one of the confusing bash constructs called
parameter expansion or whatever..
I just don't grok the bash manpage and the usage of parameter
expansion.
What I'd like though is this one liner to transform stdin from:
2345 5678 into: 2345:5678
The amount of whitespace in between the two numbers in the input
file may vary. ie:
2345 5678
Any ideas? I'm using the following right now:
DATA=$(sed 's/\W/:/' < inputfilename)
I want to lose that command substitution and "sed". Command
substitution is ok though if it is a bash internal command.
TIA
--
Mike A. Harris Linux advocate
Computer Consultant GNU advocate
Capslock Consulting Open Source advocate
... Our continuing mission: To seek out knowledge of C, to explore
strange UNIX commands, and to boldly code where no one has man page 4.
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