Linux Makefile Question:
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Given the command:
$ chmod o-w datafile

a) sets write permission to everyone for datafile
b) sets write permission to others for datafile
c) clears write permission to everyone for datafile
d) clears write permission to others for datafile

Answer:

d) clears write permission to others for datafile

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With a umask value of 112, what is the default permission assigned to newly created regular file?
a) -x-x-wx
b) -rw-rw-r-
c) -r-xr-x-r-
d) -rw-rw-r-		Which make command option ignores all errors in commands executed to remark files?
a) -i
b) -j
c) -k
d) -l