Linux Shell在一个命令中使用单引号和双引号

Question

I need your help to make this command work:

ssh -t user@localhost "cd /tmp ; PROMPT_COMMAND='echo -ne "\033]0;log\007"' ; bash"

Here is the error that I get:

bash: -c: line 0: unexpected EOF while looking for matching `''
bash: -c: line 1: syntax error: unexpected end of file
Connection to localhost closed.
log007' ; bash: command not found

Thanks

Answer 1

我建议用反斜杠（ \\" ）转义双引号：

ssh -t user@localhost "cd /tmp ; PROMPT_COMMAND='echo -ne \"\033]0;log\007\"' ; bash"

Answer 2

它经过两个壳，这意味着两个字符串扩展，因此逃脱内部部分：

ssh -t user@localhost "cd /tmp ; PROMPT_COMMAND='echo -ne \"\033]0;log\007\"' ; bash"