What is s and g in sed command?
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what are the different operating systems available?
can we use cat command as an editor ..???
fork in unix ?
What Is the command to change a file's creation time. means one file is created at the time 15:19 then time should br changed to 14:14
Which command will you use to change the permissions on file?
How can we use grep command in unix?
what is the cmd to display the last exit status in UNIX?
What does the “echo” command do?
What command a user use to view a long text file one page at a time in UNIX?
Assume the following files are in the working directory prompt> ls -l tasks -rw-r--r-- 1 alex student 1423 Feb 21 14:01 tasks What command can Alex use to give everyone permission to write to the file? What will the ls -l command display if he does so?
what is the advaantage of each user having its own copy of the shell?
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what is telnet?