View the file or directory permissions command: ls -al
# -A means all files contain hidden files, -l shows the detailed information of each file listed
For example, execute ls -al
total 115
drwxr--x--- 4 root root 4096 Oct 24 02:07 install.log
Format Description: Detailed information ls -al file formatted output, each file has 7.
The first column: drwxr - x --- There are 10 characters,
The first character may contain values: d Directory - Common file, l link file, b block file, the file C character, s socket file, the pipe P file.
9 following each character as a set of three characters, a combination of: rwx r: read authority, W: write authority, X: executable permissions, if there is no authority, represented by dashes.
Second column: indicates the number of connections, number of connections as the number of files that the connector 1. Contents directory includes other directories total number +2.
The third column: Indicates the owner of the file.
The fourth column: that all groups of the file.
The fifth column: The size of the file. Wuxi Women's Hospital Which is good http://www.xasgyy.net/
The sixth column: the file was created or last modified time.
Seventh column: The filename.