输出多行文本到文件中去
+239@~> echo "
test
`whoami`
haha
">outfile
+239@~> cat outfile
test
wang
haha
但是里面如果出现引号之类的，比较难处理 可以用heredoc：
+239@~> cat > outfile < just a test
> "`whoami`"
> haha'aa
> EOF
+239@~> cat outfile
just a test
"wang"
haha'aa
输出多行文本到文件中去
+239@~> echo "
test
`whoami`
haha
">outfile
+239@~> cat outfile
test
wang
haha
但是里面如果出现引号之类的，比较难处理 可以用heredoc：
+239@~> cat > outfile < just a test
> "`whoami`"
> haha'aa
> EOF
+239@~> cat outfile
just a test
"wang"
haha'aa