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Computer Operator and Programming Assistant (COPA)
DOS AND LINUX OPERATING SYSTEMS
Set 4
Set 4
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Q1943
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Which Linux command list the contents of parent directory?
A
"ls ~"
B
"ls */"
C
"ls /"
D
"ls .. /"
Q1944
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What is use of ?who? command in Linux?
A
login user
B
logout user
C
login password
D
logout password
Q1945
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Which command is used to hide the file?
A
attrib -h filename
B
attrib +h filename
C
attrib /h filename
D
attrib \h filename
Q1946
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Which command is used to release the read only permission?
A
attrib -r filename
B
attrib +r filename
C
attrib /r filename
D
attrib \r filename
Q1947
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Write the Linux command to remove all the permission to the user and group on the directory 'software'?
A
chmod ug - rwx software
B
chmod ug - a software
C
chmod ug - A software
D
chmod ug - Rwx software
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