1. command ls-l details-a view hidden files or directories-d only view the directory itself, not list the files and directories under the Directory-t in chronological order 2. tree-C/et
1. command ls
-L detailed information
-A. View hidden files or directories.
-D: only view the directory itself, not list the files and directories under the Directory
-T: sorted by time
2. tree-C/etc can be used to list the corresponding/etc tree structure. adding C is the display color! If too many structures are listed, you can use the same parameter L for the restriction column: tree-CL 2/3. alias (temporarily effective) [root @ niejicai-linux ~] # Which llalias ll = 'ls-l -- color = Auto'/bin/ls [root @ niejicai-linux ~] # Alias niejicai = 'ls/tmp/'[root @ niejicai-linux ~] # Niejicaikeyring-86AmDV pulse-0csfN1qMsBKf VMwareDnD yum. logks-script-Esq4wN pulse-dQkFpOTOEFmz vmware-niejicaiks-script-Esq4wN.log virtual-niejicai.gYSRns vmware-config0 vmware-rootniejicai vmware-root-558077721 [root @ niejicai-linux ~] # Ls/tmp/keyring-86AmDV pulse-0csfN1qMsBKf VMwareDnD yum. logks-script-Esq4wN pulse-dQkFpOTOEFmz vmware-niejicaiks-script-Esq4wN.log virtual-niejicai.gYSRns vmware-rootniejicai vmware-config0 vmware-root-558077721 [root @ niejicai-linux ~] # Aliasalias cp = 'CP-I 'alias l. = 'ls-d. * -- color = auto'alias ll = 'ls-l -- color = Auto' alias ls = 'ls -- color = Auto' alias mv = 'MV-I 'alias niejicai =' ls/tmp/'Alias rm = 'rm-I 'alias which = 'Alias |/usr/bin/which -- tty-only -- read-alias -- show-dot -- show- ti lde '[root @ niejicai-linux ~] # Supplement: 3.2 temporarily set the alias of the clear command to cls # alias cls = 'clear' to cancel: # unalias cls 3.3: permanently set the cd/web & ls command alias to web # vi/etc /. add the following content to bashrc: # alias web = 'CD/web & Ls'