Explain ‘library functions’ with respect to unix commands?
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Which command is used to create a directory?
What is the command to compare two files in unix?
What is a Unix signal, and how do you handle them?
distinguish between user mode and kernel mode?
What is pid?
Assume that a file’s permissions give you read and write access. What operations can you perform on the file if it is in a directory which has “r”(read) only process? What operations can you perform on the file if it is in a directory which has “x”(execute) only access?
What is the significance of the 'tee' command?
What difference between cmp and diff commands?
Can a process kill itself in UNIX/or in its various versions?
What is grep and how do you use it?
What is unix command?
what does the command 'wc' do?