如何在 linux ssh here 脚本中禁止评论

Question

在远程服务器上的 linux bash 到运行命令中使用此处脚本时，所有行都会被打印出来。评论怎么能被屏蔽？

下面代码的输出应该是：

ls
... (whatever is in this folder)

echo -e this is a test\ndone
this is a testndone

exit

这可能吗？这样做的原因是命令和注释更加复杂，使得输出难以阅读。应该更漂亮

#!/bin/bash

ssh -tt hogan@123.123.123.123 <<EOF
  # this line get printed
  ls

  # and this comment also
  echo -e this is a test\ndone

  # exit ssh
  exit
EOF

#end of script

Answer 1

输入命令后尝试输入

| grep -v "^[[:space:]]*#"

例如，

cat temp.txt | grep -v "^[[:space:]]*#"

Answer 2

我想你可能会问这个

grep -v '^[[:space:]]*#' <<EOF | ssh -tt hogan@123.123.123.123  
  # this line get printed
  ls

  # and this comment also
  echo -e this is a test\ndone

  # exit ssh
  exit
EOF

Answer 3

我一般用sed过滤注释和空行。以下还将删除同一行中命令后面的注释：

#!/bin/bash

sed 's/[[:blank:]]*#.*//; /^$/d' <<EOF | ssh -tt hogan@123.123.123.123
  # this line get printed
  ls

  # and this comment also
  echo -e "this is a test\ndone"

  # exit ssh
  exit
EOF

如何在 linux ssh here 脚本中禁止评论

How to suppress comments in linux ssh here script

linux

ssh

bash

heredoc