EFI 12.3 Output Redirection
12.3Output Redirection
Output of an EFI shell command can be redirected to a file. The syntax of the redirection is as follows:
Command > unicode_output_file_pathname
Command >a ascii_output_file_pathname
Command 1> unicode_output_file_pathname
Command 1>a ascii_output_file_pathname
Command 2> unicode_output_file_pathname
Command 2>a ascii_output_file_pathname
Command >> unicode_output_file_pathname
Command >>a ascii_output_file_pathname
Command 1>> unicode_output_file_pathname
Command 1>>a ascii_output_file_pathname
Table 12.2 lists the character strings used to indicate a redirect or append operation.
| Table 12.2 Special strings |
|
|
String | Explanation |
">" | Redirects the standard output to a Unicode file. |
">a" | Redirects the standard output to an ASCII file. |
"1>" | Redirects the standard output to a Unicode file. |
"1>a" | Redirects the standard output to an ASCII file. |
"2>" | Redirects the standard error output to a Unicode file. |
"2>a" | Redirects the standard error output to an ASCII file. |
">>" | Appends the standard output to a Unicode file. |
">>a" | Appends the standard output to an ASCII file. |
"1>>" | Appends the standard output to a Unicode file. |
"1>>a" | Appends the standard output to an ASCII file. |
The shell can redirect the standard output or standard error output to a single file.
Remark: The standard output and the standard error output cannot both be redirected to the same file. Redirection to multiple files at the same time is not possible.