A.chmod 1755 /bin/foo

B.chmod 755+s /bin/foo

C.chmod 2755 /bin/foo

D.chmod u-s /bin/foo

E.

A.yum --query --all

B.yum --list --installed

C.rpm --query --list

D.rpm --list --installed

E.rpm --query --all

A.When the system is shut down or rebooted

B.When a configurable amount of time, 15 minutes by default, has passed

C.When the ring buffer is read using dmesg without any additional parameters

D.When the ring buffer is explicitly reset using the command dmesg --clear

E.When the kernel loads a previously unloaded kernel module

A.tr -d ' ' < a.txt > b.txt

B.tr -s ' ' < a.txt > b.txt

C.tr -c ' ' < a.txt > b.txt

D.tr '\s' ' ' < a.txt > b.txt

E.tr -r ' ' '\n' < a.txt > b.txt

A.arch

B.sysinfo

C.uname

D.lspci

E.info