Q. The command is valid.

$ ls -lRa $HOME > home.ls

View solution

Q. The UNIX shell is both _______ and _______ language.

View solution

Q. Which of the following function(s) are performed by an interactive shell?

View solution

Q. Every feature used in an interactive shell can also be used by a shell script.

View solution

Q. Which one of the following is arguably the best shell to use?

View solution

Q. Which one of the following command is used to create a child shell?

View solution

Q. Shell variables are of ____ types.

View solution

Q. Suppose ABD_DIR is a local variable. Then it will be accessible to the child process.

View solution

Q. ____ command is used to display the environment variables only.

View solution

Q. Which symbol is used for setting the PS1 prompt to show the current event number?

View solution

Q. set command by default displays the variables in the current shell.

View solution

Q. Which one of the following keyword is used with the set command to avoid overwrite existing file?

View solution

Q. To prevent accident logging out, we can use ____ as a keyword with the set command.

View solution

Q. Which of the following features of UNIX may be used for inter process communication?

View solution

Q. In a system, if 5 people are currently using the vi editor. then the number of corresponding processes will be

View solution

Q. The command echo welcome > /dev / tty

View solution

Q. dev/null

View solution

Q. The advantage of binary files over text files is that

View solution

Q. The permission bits of a file noname, can be set to _rws_ _x_ _x by the command.

View solution

Q. /bin/passwd has the user execution permission set to 's' because

View solution