https://www.binarytides.com/linux-cpu-information/

Explanation
The command that will set the sticky bit on a directory called devops with 755 file permission is chmod 1755 devops. This command will use chmod to change the mode of the directory devops to 1755, which means that the owner has read, write, and execute permissions (7), the group has read and execute permissions (5), and others have read and execute permissions (5). The first digit 1 indicates that the sticky bit is set on the directory, which is a special permission that prevents users from deleting or renaming files in the directory that they do not own.
The other options are not correct commands for setting the sticky bit on a directory. The chown -s 755 devops command is invalid because chown is used to change the owner and group of files or directories, not their permissions. The -s option for chown is used to remove a symbolic link, not to set the sticky bit. The chown
1755 devops command is also invalid because chown does not accept numeric arguments for changing permissions. The chmod -s 755 devops command will remove the sticky bit from the directory devops, not set it. References: chmod(1) - Linux manual page; How to Use SUID, SGID, and Sticky Bits on Linux

https://askubuntu.com/questions/215505/how-do-you-monitor-the-progress-of-dd You can monitor the progress of dd once it's running without halting it by using the kill command to send a signal to the process.
After you start dd, open another terminal and enter either:
sudo kill -USR1 $(pgrep ^dd$)
Or, if you're on BSD or OS X:
sudo kill -INFO $(pgrep ^dd$)

This command will use the tr tool to translate all lowercase letters in the testfile to uppercase letters and write the output to the uppercase file. The first argument `[a-z]' specifies the set of characters to be replaced, and the second argument `[A-Z]' specifies the set of characters to replace with. The `<' symbol redirects the input from the testfile, and the `>' symbol redirects the output to the uppercase file.