In linux, file, folder, etc can accesse by three types of user groups. Owner Group Other and each user group has three types of permissions. read,write, and execute. As an example, (if user has read permision we denote it by using 1 and if not by 0 in binary ) Owner Group Other rwx rw- r-- 111 110 100 7 6 4 we can use " ls -l " command to view files,folders,links with permissions. drwxr-xr-x 2 melick melick 4096 2008-11-23 00:32 Music this is the sample. so we look each and every element further. drwxr-xr-x first charactor "d" is for type of the file. there are three types. d = directory (folder) l = link (symbolic link, shortcut) - = file c = charactor device (ex:- /dev/ttys0) {try:- ls -l /dev/ttys0} b = block device (ex:- /dev/sda1) {try:- ls -l /dev/sda1} now we consider the permission set in the above folder. rwxr-xrx- = rwx r-x r-x owner group other 111 101 101 7 5 ...
MELICK RAJEE BARANASOORIYA | Enterprise Architect