If you want to save the output of a command to a file, then you can make use of the redirection operators.
Redirection Operators:
Operator | Description |
---|---|
> |
It redirects standard output to a file. Note that it will overwrite the file's content if it exists. |
>> |
It redirects standard output to a file. Note that it will append the output to the end of the file. |
< |
It redirects standard input from a file by providing input to a command from the contents of the file. |
2> |
It redirects standard error (file descriptor 2) to a file, overwriting the file's content if it exists. |
2>> |
It redirects standard error (file descriptor 2) to a file, appending the output to the end of the file. |
&> |
It redirects both standard output and standard error to a file, overwriting the file's content if it exists. |
&>> |
It redirects both standard output and standard error to a file, appending the output to the end of the file.. |
>& |
Redirects one file descriptor to another file descriptor. For example, 2>&1 redirects standard error to standard output. |
Now let us see a few simple examples of how to redirect a bash command output to a file.
bash-3.2$ ls -ltrh > /Users/c2ctechtv/Desktop/ls_command_output.txt
bash-3.2$ cat /Users/c2ctechtv/Desktop/ls_command_output.txt
total 0
drwxr-xr-x 5 root wheel 160B Aug 5 11:51 standalone
drwxr-xr-x 42 root wheel 1.3K Aug 5 11:51 share
drwxr-xr-x 229 root wheel 7.2K Aug 5 11:51 sbin
drwxr-xr-x 357 root wheel 11K Aug 5 11:51 libexec
drwxr-xr-x 32 root wheel 1.0K Aug 5 11:51 lib
drwxr-xr-x 981 root wheel 31K Aug 5 11:51 bin
lrwxr-xr-x 1 root wheel 25B Aug 5 11:51 X11R6 -> ../private/var/select/X11
lrwxr-xr-x 1 root wheel 25B Aug 5 11:51 X11 -> ../private/var/select/X11
drwxr-xr-x 5 root wheel 160B Aug 11 07:36 local
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