DOS AND LINUX OPERATING SYSTEMS - Practice Mode

1) Which Linux command list the contents of parent directory?

"ls ~" "ls */" "ls /" "ls .. /"

Correct Answer: "ls .. /"

2) What is use of ?who? command in Linux?

login user logout user login password logout password

Correct Answer: login user

3) Which command is used to hide the file?

attrib -h filename attrib +h filename attrib /h filename attrib \h filename

Correct Answer: attrib +h filename

4) Which command is used to release the read only permission?

attrib -r filename attrib +r filename attrib /r filename attrib \r filename

Correct Answer: attrib -r filename

5) Write the Linux command to remove all the permission to the user and group on the directory 'software'?

chmod ug - rwx software chmod ug - a software chmod ug - A software chmod ug - Rwx software

Correct Answer: chmod ug - rwx software

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