What does sed command do in unix?
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What is the difference between a hard link and a soft link in Unix?
The command grep first second third /usr/you/myfile a) prints lines containing the words first, second or third from the file /usr/you/myfile b) searches for lines containing the pattern first in the files second, third, and /usr/you/myfile and prints them c) searches the files /usr/you/myfiel and third for lines containing the words first or second and prints them d) replaces the word first with the word second in the files third and /usr/you/myfile e) None of the above
Can you explain a little bit about command substitution?
what is the use of ls -l command & what is the information it gives about user ?
What is the command to check ports active in UNIX?
how unix kernel distinguishes between a normal file and device file ?
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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?
Can you write a command to erase all files in the current directory including all its sub-directories?
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Using unix command how to display no of records in oracle?
How to find $ai_serual resolved path by using unix
How does one process we can start an executable file? How to get the PID process, which we started?