bash - 如何使 bash 查找在同一进程中运行？

Question

代码优先

echo $$ - $BASHPID

find . | while read -r file; do
    echo $$ - $BASHPID: ${file}
done

问题是 while 中的代码在子进程中运行。我怎样才能让它在同一个进程中运行？

Answer 1

只需使用 process substitution :

echo "$$ - $BASHPID"

while read -r file; do
    echo "$$ - $BASHPID: ${file}" #better to quote!
done < <(find .)
# -----^^^^^^^^^

来自给定的链接:

Process substitution is a form of redirection where the input or output of a process (some sequence of commands) appear as a temporary file.