LinkedIn Bash

Bash linkedin quiz

To run a copy command in a subshell, which syntax would you use?

• ( command )

• (( command ))

• sh command

• { command; }

Bash linkedin assessment

Using awk, what would be the output of this command string?

echo "1 2 3" | awk '{for (i=1; i<=NF; i++) s=s+$i};END {print s}'

•  6
•  123
•  3
•  600

linkedin Bash assessment

The command below will search the root filesystem for files named finance.db. In this context, what information is being sent to /dev/null?

find / -name "finance.db" 1>results.txt 2>/dev/null

• information sent to the standard error—for example, errors that the find command displays as it runs
• the names of files that do not match finance.db
• information sent to the standard output—that is, the path to files the find command has located
• the names of files that match finance.db

linkedin Bash test

To permanently remove empty lines from a file called textfile, which command could you use?

• sed -i '/^$/d' textfile 
• sed '/^$/d' textfile
• sed -i 's/^$//' textfile
• cat textfile | sed '/^$/d'