Practice Shell Scripting Questions and Answers

• Which command is used to display the last 10 lines of a file in Linux?
• In shell scripting, which command is used to read input from the user?
• In Bash, which syntax is used for arithmetic expansion?
• What is the exit status code of a successfully executed command in Linux shell?
• Which command will read input line-by-line from a file in a shell script?
• How can you make a shell script executable?
• What does $# represent in a shell script?
• Star schema consists of:
• OLAP is primarily used for:
• Slowly Changing Dimension (SCD) is used to:
• Which ETL process step validates and cleans data before loading?
• Metadata in a data warehouse primarily describes:
• Which command is used to display the contents of a file in Linux?
• Which symbol is used for variable substitution in shell scripting?
• Which command is used to make a shell script executable?
• Which command is used to find the number of lines, words, and characters in a file?
• What does the #!/bin/bash line at the beginning of a shell script indicate?
• Which command is used to check the current working directory in Linux?
• Which symbol is used to comment a single line in shell scripts?
• How can you pass command-line arguments to a shell script?
• Which command is used to display the first few lines of a file?
• Which command is used to display the last few lines of a file?
• Which symbol is used for logical AND in shell scripting?
• Which command is used to search for a pattern in files?
• What does the exit command do in a shell script?
• Which command is used to display all currently running processes in Linux?
• Which command is used to change file permissions in Linux?
• In shell scripting, which symbol represents all files in the current directory?
• Which command displays the manual page for another command?
• Which command is used to combine the contents of multiple files?
• How do you check the exit status of the last executed command in a shell?
• Which command is used to search for a string inside a file?
• In shell scripting, which symbol is used to redirect the standard output to a file, overwriting its contents?
• In a POSIX shell script, which construct correctly tests whether variable x is an empty string?
• Which command safely iterates over filenames that may contain spaces and newlines in a shell script?
• Which command safely iterates over filenames that may contain spaces and newlines in a shell script?
• Which construct replaces a command with its output in a POSIX shell?
• To check if a file /tmp/data.txt is both readable and writable by the current user in a shell conditional, which test is correct?