How to display/list only folders/directories or only files in Linux/Unix (List all the zombie process & how to create alias)

Display/List only folders/directories or only files in Linux/Unix

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1) Display or list all directories in current location in Linux/Unix

Type the following command:

ls -ld */

ls -l | grep '^d'

ls -l | egrep '^d'

Display or list the hidden folder at current location, type the following command:

ls -ld .*/

ls -la | grep '^d'

ls -la | egrep '^d'

This command lists directories in the current path/folder: ls -d */

*/ is a pattern that matches all of the subfolders in the current folder (* would match all files and subfolders; the / restricts it to folders/directories). for e.g. to list all subfolders under /home/yogesh/, use ls -d /home/yogesh/*/

2) Display or list all files in current location in Linux/Unix

ls -l | grep -v '^d'

ls -l | egrep -v '^d'

ls -la | egrep -v '^d'

3) List all the directories at 1 Level depth in /etc including hidden folders with find command:

find /etc -maxdepth 1 -type d

4) You Can use find command to list either files or folders/directories:

The find command can be used as follows to list all directories in /etc

find /etc -type d

find /etc -type d -ls

find . -type d -ls

5) To list/see the zombie/defunct process in Linux/Unix:

pf -ef | grep -i defunct

ps -elf | grep -w Z

6) How to create alias to save the time:

alias lf="ls -ls | egrep -v '^d'"

alias ldir="ls -l | egrep '^d'"