On 28/07/17 07:15 AM, rpjday [ at ] crashcourse [ dot ] ca wrote: > > Curious about the best(?) way to do some simple operations in a shell > script > that I would *prefer* to be POSIX-compliant, so here's the first > question -- > how to loop through the individual characters of a string? > > I just stumbled across this solution I'd never heard of: > > $ echo "rday" | grep -o . [-o,--only-matching option to grep] > r > d > a > y > $ > > so, obviously, I can stick that command in a "for" loop in my script. > I'm not sure I need anything simpler or more elegant than that, but is > there anything even cooler? In my head I came up with some other loops like echo -n "abcåäöÅÄÖ"|sed 's/./&\n/g' (don't forget international characters may not be 1 byte) I then asked google who found https://stackoverflow.com/questions/10551981/how-to-perform-a-for-loop-on-each-character-in-a-string-in-bash And there it's several other ways including one I didn't know about (fold) but interesting enough the grep -o one is not listed there. /ps > > More shell questions coming shortly ... > > rday > > > _______________________________________________ > Linux mailing list > Linux [ at ] lists [ dot ] oclug [ dot ] on [ dot ] ca > http://oclug.on.ca/mailman/listinfo/linux