Linux Makefile Question: Download Makefile PDF

The permission -rwxr-r- represented in octal expression will be:
a) 777
b) 666
c) 744
d) 711

c) 744

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srwxr-xrw- is a: a) internet socket file b) unix domain socket file c) symbolic link d) shared file	The file permission 764 means: a) Every one can read, group can execute only and the owner can read and write b) Every one can read and write, but owner alone can execute c) Every one can read, group including owner can write, owner alone can execute d) Every one can read and write and execute