in this case doesn't have access to "a" wherever it is... $ landrun --ro /usr cat /usr/bin/ls | wc -l 400 executing ls (as in actual binary execution) will r

in this case doesn't have access to "a" wherever it is... $ landrun --ro /usr cat /usr/bin/ls | wc -l 400 executing ls (as in actual binary execution) will require --exec $ landrun --ro /usr ls /usr/bin/ ls: cannot open directory '/usr/bin/': Permission denied $ landrun --ro /usr --exec ls /usr/bin/ list of billions of files note that I don't really love the --exec thingy, if it's not "on" by default it's just for sake of being explicit. Update: there's a bug to limit "file access", which I'll fix asap. Update2: Adding a --exec-path instead to limit executable, it wasn't the best idea to have a global --exec anyway Update3: Have a look at V0.1.4, I think it's far cleaner now.