Parameter sequence and execution of Linux commands

Instance illustration:

 

 

Step by step:

[Root @ subversion ~] # Man DF [root @ subversion ~] # DF-t-h file system type capacity used available % mount point/dev/mapper/VolGroup00-LogVol00 ext3 446g 376g 48g 89%/dev/sda1 ext3 99 m 21 m 74 m 22%/boottmpfs tmpfs 1014 m 0 1014 m 0%/dev/SHM [root @ subversion ~] # DF-HT file system type capacity used available % mount point/dev/mapper/VolGroup00-LogVol00 ext3 446g 376g 48g 89%/dev/sda1 ext3 99 m 21 M 74 m 22%/boottmpfs tmpfs 1014 m 0 1014 m 0%/dev/SHM [root @ subversion ~] # DF-th file system type capacity used available % mount point/dev/mapper/VolGroup00-LogVol00 ext3 446g 376g 48g 89%/dev/sda1 ext3 99 m 21 M 74 m 22%/boottmpfs tmpfs 1014 m 0 1014 m 0%/dev/SHM [root @ subversion ~] # DF-h-t file system type capacity used available % mount point/dev/mapper/VolGroup00-LogVol00 ext3 446g 376g 48g 89%/dev/sda1 ext3 99 m 21 m 74 m 22%/boottmpfs tmpfs 1014 m 0 1014 m 0%/dev/SHM [root @ subversion ~] # DF file system 1 K-block used available % mount point/dev/mapper/VolGroup00-LogVol00 467494016 393506748 49856916 89%/dev/sda1 101086 20748 75119 22%/boottmpfs 1037584 0 1037584/ dev/SHM [root @ subversion ~] # Man DF

 

 

Experiment found that,

 

The execution sequence of command parameters is irrelevant to the parameter sequence;

 

The output of the command parameter [common default] contains the output of multiple other parameters;

 

For more information, see the online manual. [Man commands]