这个gcc命令是什么意思？

Question

gcc test.c 2> error-msg

谁能解释这个命令的每个部分，例如2> error-msg ？

Answer 1

I suspect the command to be gcc test.c 2> error-msg . 2> means redirect the error stream of the command gcc test.c to the file named error-msg (standard messages will be printed on screen as usual).

If it is really gcc test.c 2> error -msg then the executed command will be gcc test.c -msg and the error stream redirected to the file error . It is not very common to redirect in the middle of a command line.

Answer 2

gcc test.c 2> error -msg is the same as gcc test.c -msg 2> error , which means your shell executes gcc test.c -msg and redirects its standard error output to file called error . And the error file will likely contain " error: unrecognized command line option '-msg'"