Here is my ls command, which shows the list of files in my current directory:rper:  ls -l$commandoutput[0]  file.txtI tried to remove $commandoutput[0] line by using rm -rf $commandoutput[0], but it shows the following error. How can I remove it?rper: rm -rd $commandoutput[0]commandoutput: Undefined variable.
Unable to remove the $ sign named files using linux?
linux;files;rm;special characters
Escape $ (and desirably [, ]) sign in your file name with backslash \:rm -rf \$commandoutput\[0\]