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Quick links About
cat
Syntax
Examples
Related commands
Unix
main page
About cat
Allows you to look,
modify or combine a file.
Syntax
cat filename [-n] [-b]
[-u] [-s] [-v]
| filename |
The name of the file
or files that you wish to look at or perform tasks on. |
| -n |
Precede each line output with its line number. |
| -b |
Number the lines, as -n, but omit the line numbers from blank lines. |
| -u |
The output is not buffered. (The default is
buffered output.) |
| -s |
cat is silent about non-existent files. |
| -v |
Non-printing characters (with the exception of tabs, new-lines and form-feeds) are
printed visibly. ASCII control characters (octal 000 - 037) are printed as ^n, where n is the corresponding ASCII character in the range octal 100 - 137 (@, A, B, C, . . ., X, Y, Z, [, \, ], ^, and _); the DEL character (octal 0177) is printed ^?. Other non-printable characters are printed as M-x, where x is the ASCII character specified by the
low order seven bits. |
| -e |
A $ character will be printed at the end of each line (prior to the new-line). |
| -t |
Tabs will be printed as ^I's and formfeeds to be printed as ^L's. |
*If the -v is used -e and -t will be ignored.
Examples
cat file1.txt
file2.txt > file3.txt - Reads file1.txt and file2.txt and
combines those files to make file3.txt.
Related commands
ed
pico
tac
tee
touch |
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