Cat command
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The cat command is used to concatenate files and display on the standard output (screen).
Quick File Creation With cat
Type the following command to create a file called demo.txt:
cat > demo.txt
Sample session:
This is a demo. This is a test. [Press CTRL+D to save the file]
- cat copies to standard output. To save the changes hit ctrl+d, which goes to the file demo.txt
Quickly View File With cat
Type the following command:
cat /etc/passwd
Number All Output Lines
cat -n /etc/passwd
Shell All Including Tabs and Nonprinting Characters
cat -A /path/to/file
Recommend Readings
You can view cat command man page by typing the following command at a shell prompt:
man cat
See also