PHP
·
发表于 5年以前
·
阅读量：8289
#!/bin/bash
# testing closing file descriptors
exec 3>test
echo "This is a test line of data" >&3
# closing file descriptor
exec 3>&-
echo "This won't work" >&3
cat test
#覆盖前一个test文件
exec 3>test
echo "This'll be bad" >&3