I reading LSF and saw some operation, description one i am not found. Please tell me what this means: Full code listing: Source: LFS – Host System Requirements Answer This is a globbing wildcard pattern. It causes the shell to expand the line to More on shell expansion and wildcard patterns: http://tldp.org/LDP/Bash-Beginners-Guide/html/sect_03_04.html Taking the first example from there, you can