When I use the ls command with the option -l, the first string of letters gives the info about each file, and the first letter in this string gives the file's type. (d = directory, - = standard file, l = link, etc.)How can I filter the files according to that first letter?
How can I list files by type with ls?
ls
You can filter out everything but directories using grep this way:ls -l | grep '^d'the ^ indicates that the pattern is at the beginning of the line. Replace d with -, l, etc., as applicable.You can of course use other commands to directly search for specific types (e.g. find . -maxdepth 1 -type d) or use ls -l | sort to group similar types together based on this first character, but if you want to filter you should use grep to only select the appropriate lines from the output.