Posix shell function for finding executable files in the $PATH

orbea ec41715f06 Use test -n everywhere 2 anni fa
scripts 75426af2f1 test.sh: Test if command exits with the first missing arg. 4 anni fa
.gitignore 508406ee4e exists.sh: Return absolute paths. 4 anni fa
LICENSE ec41715f06 Use test -n everywhere 2 anni fa
TODO 69f7c7a66a Add a TODO. 4 anni fa
command.sh ec41715f06 Use test -n everywhere 2 anni fa
exists.sh ec41715f06 Use test -n everywhere 2 anni fa
run.sh ec41715f06 Use test -n everywhere 2 anni fa
test.sh ec41715f06 Use test -n everywhere 2 anni fa
which.sh ec41715f06 Use test -n everywhere 2 anni fa