Linux command: sed sed - stream editor for filtering and transforming text Notes: sed and grep operate line-by-line Search and replace all my_ with his_ in file.txt file $ sed -i 's/my_/his_/g' file.txt Search and delete blank line $ sed -i 's/^$//' file.txt Labels Linux LPIC-1
Windows command: icacls Icacls is a command-line utility that can be used to display or modify discretionary access control lists (DACLs) on specified files, and apply stored DACLs to files in specified directories. Read more