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Unix

Unix
Which of the following keys is used to replace a single character with new text?

S
R
r
s

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Unix
Which of the following commands is used to copy a file wb from the programs directory into a file called wbx in the misc directory?

cp programs/wb misc/wbx
copy a:programs/wb b:misc/wbx
copy programs/wb misc/wbx
tar programs/wb misc/wbx

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Unix
Which of the following shell's wildcards are used to match any number of characters including none?

None of these
?
[ijk]
*
[!ijk]

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Unix
Which of the following commands is used to absolutely assign all permissions to the owner, read and write permissions to the group and only executable permission to the others of the file note?

chmod 671 note
chmod 167 note
chmod 4=rwx, g=rw note
chmod 761 note

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

1024 bytes
256 bytes
512 bytes
None of these
2048 bytes

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Unix
The command used to remove the directory is;

remove
None of these
rd
rdir
rmdir

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