On 09/02/2015 09:44 AM, Hardik A Gohil wrote: > Hello, > > Can any one explain me this script from > rules/post/ptxd_make_image_common.make used while creating root.ubifs image > > DOPERMISSIONS := '{ \ > if ($$1 == "f") \ > printf("chmod %s \".%s\"; chown %s.%s \".%s\";\n", $$5, > $$2, $$3, $$4, $$2); \ > if ($$1 == "n") \ > printf("rm -f \".%s\"; mkdir -p \".`dirname \"%s\"`\"; > mknod -m %s \".%s\" %s %s %s; chown %s.%s \".%s\";\n", $$2, $$2, $$5, > $$2, $$6, $$7, $$8, $$3, $$4, $$2);}' This scripts generates chmod, chown commands to change the ownership and permission of a file or generates commands to create device nodes with given ownership and permissions. Marc -- Pengutronix e.K. | Marc Kleine-Budde | Industrial Linux Solutions | Phone: +49-231-2826-924 | Vertretung West/Dortmund | Fax: +49-5121-206917-5555 | Amtsgericht Hildesheim, HRA 2686 | http://www.pengutronix.de |