I have a script that iterates through files and does some string substitution to insert the date. #!/bin/bash f="/tmp/file.txt" # with .txt extension timestamp="$(date +%H%M%S)" echo "${f%%.*}-$timestamp.${f#*.}" It provides the following output, which is correct. /tmp/file-220304.txt But if a ...

why those processes appear if they are not consuming any cpu or memory. Is there any way to show only process that are really consuming memory or cpu?

I had ubuntu 20.04 installed on my HDD and i copied it to my new partition (/dev/sdb4) on SSD, then i installed grub. Now whenever i select ubuntu on /dev/sdb4 (i.e. ubuntu on SSD) boot option, my system boots from HDD ubuntu instead of SSD ubuntu. How to fix this? Refer to this for more info on...