1run_tr () 2{ 3 echo -n "echo '$1' | tr '$2' '$3': " 4 echo "$1" | $bb tr "$2" "$3" 5 echo 6} 7tr_test () 8{ 9 run_tr "cbaab" abc zyx 10 run_tr "TESTING A B C" '[A-Z]' '[a-z]' 11 run_tr "abc[]" "a[b" AXB 12 run_tr abc '[:alpha:]' A-ZA-Z 13 run_tr abc56 '[:alnum:]' A-ZA-Zxxxxxxxxxx 14 run_tr 012 '[:digit:]' abcdefghi 15 run_tr abc56 '[:lower:]' '[:upper:]' 16 run_tr " " '[:space:]' 12345 17 run_tr " " '[:blank:]' 12 18 run_tr 'a b' '[= =]' X 19 run_tr "[:" '[:' ab 20 run_tr " .,:" '[:punct:]' 12 21 run_tr " .,:" '[:cntrl:]' 12 22} 23 24bb= tr_test > logfile.gnu 25bb=busybox tr_test > logfile.bb 26diff -u logfile.gnu logfile.bb 27