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Unix

Unix
Which command will be used with vi editor to replace single character under cursor with any number of characters?

s
a
S
A

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Unix
Which command is used with file named 'note' to remove the executable permission from the user and assign read permission to the group and others?

None of these
chmod go+r, u+x note
chmod go+x, u-x note
chmod g-x, uo+r note
chmod u-x, go+r note

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Unix
Which of the following commands is used to copy directory structures in and out

cp
copy
None of these
cpio
cp - p

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Unix
Which of the following commands is used to obtain a list of all files by modification time?

ls -t
ls -i
ls -R
ls -1

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Unix
The UNIX file system stores a date in physical blocks of

512 bytes
256 bytes
2048 bytes
1024 bytes
None of these

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Unix
Which command is used to make all files and sub-directories in the directory (progs) executable by all users?

chmod -R 222 progs
chmod -R a+x progs
chmod -1 a+x progs
chmod -x a+x progs

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