cat - Unix, Linux Command
NAME
cat - Concatenate and print the content of files.
SYNOPSIS
cat [Options] [File]...
DESCRIPTION
Cat command concatenate FILE(s), or standard input, to standard output. With no FILE, or when FILE is -, it reads standard input.
OPTIONS
| Tag | Description |
|---|
| -A, --show-all | equivalent to -vET |
| -b, --number-nonblank | number nonblank output lines |
| -e | equivalent to -vE |
| -E, --show-ends | display $ at end of each line |
| -n, --number | number all output lines |
| -s, --squeeze-blank | never more than one single blank line |
| -t | equivalent to -vT |
| -T,--show-tabs | display TAB characters as ^I |
| -u | (ignored) |
| -v, --show-nonprinting | use ^ and M- notation, except for LFD and TAB. display this help and exit |
| --help | display this help and exit |
| --version | output version information and exit |
EXAMPLES
Create two sample files
#sample.txt
This is a sample text file
#sample1.txt
This is a another sample text file
To display content of a file.
$ cat sample.txt
This is a sample text file
To display content of all txt files.
$ cat *.txt
This is a another sample text file
This is a sample text file
To concatenate two files.
$ cat sample.txt sample1.txt > sample2.txt
$ cat sample2.txt
This is a sample text file
This is a another sample text file
To put content of a file in a variable.
$ variable_content = 'cat sample.txt'
Print
