배치 스크립트 및 쉘 스크립트를 실행하다 보면, Redirect(> , >>)를 자주 사용하게 된다.
그런데 쉘 스크립트에서는 "2>&1" 를 활용하여, error 및 standard output을 파일 등에보내는 것은 잘 알려진 사실이었지만(내가 알고 있었지만), 윈도우즈 배치 스크립트에서도 똑같이 활용될 수 있다는 것을 오늘 처음 알았다.
역시 배움은 나의 힘!!!
| Redirection | |
|---|---|
| command > file | Write standard output of command to file |
| command 1> file | Write standard output of command to file (same as previous) |
| command 2> file | Write standard error of command to file (OS/2 and NT) |
| command > file 2>&1 | Write both standard output and standard error of command to file (OS/2 and NT) |
| command >> file | Append standard output of command to file |
| command 1>> file | Append standard output of command to file (same as previous) |
| command 2>> file | Append standard error of command to file (OS/2 and NT) |
| command >> file 2>&1 | Append both standard output and standard error of command to file (OS/2 and NT) |
| commandA | commandB | Redirect standard output of commandA to standard input of commandB |
| commandA 2>&1 | commandB | Redirect standard output and standard error of commandA to standard input of commandB (OS/2 and NT) |
| command < file | command gets standard input from file |
| command 2>&1 | command's standard error is redirected to standard output (OS/2 and NT) |
| command 1>&2 | command's standard output is redirected to standard error (OS/2 and NT) |
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