How do I find previous commands in unix?
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What is command substitution?
what are the different hardwares available?
Why we are using UNIX OS when we are doing the testing in our application?
What are filter commands in unix?
Which command is used to restrict incoming messages?
29. How to display top 10 users Who | head -10 | wc –w
Which unix command to make a new directory?
what is the default permission for /etc/shadow file in UNIX
how many types of file in unix?
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Is there a way to erase all files in the current directory, including all its sub-directories, using only one command?
What's a command word?
what these two commands prints "echo test","cat test"?