WB JECA MCA Operating System Previous Year Questions (PYQs) – Page 4 of 4
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33.In shell script, which command is used to create a new directory ?
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Solution
mkdiris the command to create a new directory in Unix/Linux.
34.In shell script, which command is used to copy a file?
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Solution
cpis used to copy files or directories in Unix/Linux.
35.In shell script, which command is used to delete a file?
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rmis the command to remove/delete files in Unix/Linux.
36.In Unix/Linux platform, which command is used to find out the difference between two files?
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Solution
diffcompares two files line by line and shows differences.
37.In Unix/Linux platform, which command is used to create a symbolic link?
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Solution
ln -sis used to create symbolic (soft) links in Linux.
38.In Unix/Linux platform, which command is used to view the inode number of a file?
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ls -idisplays the inode number of each file.
39.In Unix/Linux platform, which command is used to specify the access mode for files?
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chmodis used to change file permissions (read/write/execute).
40.In Unix/Linux platform, ______ command is used to show current running processes.
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psshows the list of currently running processes.
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