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回声$？使用ssh -T参数连接远程主机后返回1

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回声$？使用ssh -T参数连接远程主机后返回1

我用来ssh -T foo@bar登录远程主机。但是登录成功后echo $?命令响应。 此外，如果我使用，请返回。 1
echo $?0ssh -t foo@bar

代码的1意思是Catchall for general errors.

  1. 那这个阶段有什么手段呢？
  2. 如何修复它？
    谢谢

更新#1
有的澄清一下： 1、问：登录后是在服务器上
运行，还是注销后在客户端运行？ A：登录服务器后运行，在远程服务器端执行。 2. 问：如果使用 禁用 TTY 分配，如何登录？ 答：它确实有效，我在很多机器上进行了测试。 3. 问：您是否不需要 shell 会话？ A：不，我只是不想使用。这也是一个 ssh 会话。我需要在程序中使用“干净”的消息。这不是一个交互式环境。 echo $?
echo $?
-T


pseudo-terminal

再次感谢！

更新#2
一些环境文件。
1.~/.profile文件

if [ "$BASH" ]; then
  if [ -f ~/.bashrc ]; then
    . ~/.bashrc
  fi
fi

tty -s && mesg n

  1. ~/.bashrc 文件：

    # ~/.bashrc: executed by bash(1) for non-login shells.
# see /usr/share/doc/bash/examples/startup-files (in the package bash-doc)
# for examples

# If not running interactively, don't do anything
[ -z "$PS1" ] && return

# don't put duplicate lines in the history. See bash(1) for more options
# ... or force ignoredups and ignorespace
HISTCONTROL=ignoredups:ignorespace

# append to the history file, don't overwrite it
shopt -s histappend

# for setting history length see HISTSIZE and HISTFILESIZE in bash(1)
HISTSIZE=1000
HISTFILESIZE=2000

 # check the window size after each command and, if necessary,
 # update the values of LINES and COLUMNS.
shopt -s checkwinsize

 # make less more friendly for non-text input files, see lesspipe(1)
[ -x /usr/bin/lesspipe ] && eval "$(SHELL=/bin/sh lesspipe)"

  # set variable identifying the chroot you work in (used in the prompt below)
if [ -z "$debian_chroot" ] && [ -r /etc/debian_chroot ]; then
    debian_chroot=$(cat /etc/debian_chroot)
fi

 # set a fancy prompt (non-color, unless we know we "want" color)
case "$TERM" in
    xterm-color) color_prompt=yes;;
esac

 # uncomment for a colored prompt, if the terminal has the capability; turned
 # off by default to not distract the user: the focus in a terminal window
 # should be on the output of commands, not on the prompt
 #force_color_prompt=yes

if [ -n "$force_color_prompt" ]; then
    if [ -x /usr/bin/tput ] && tput setaf 1 >&/dev/null; then
    # We have color support; assume it's compliant with Ecma-48
    # (ISO/IEC-6429). (Lack of such support is extremely rare, and such
    # a case would tend to support setf rather than setaf.)
    color_prompt=yes
    else
    color_prompt=
    fi
fi

if [ "$color_prompt" = yes ]; then
    PS1='${debian_chroot:+($debian_chroot)}\[\033[01;32m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\]\$ '
else
    PS1='${debian_chroot:+($debian_chroot)}\u@\h:\w\$ '
fi
unset color_prompt force_color_prompt

 # If this is an xterm set the title to user@host:dir
case "$TERM" in
xterm*|rxvt*)
    PS1="\[\e]0;${debian_chroot:+($debian_chroot)}\u@\h: \w\a\]$PS1"
    ;;
*)
    ;;
esac

 # enable color support of ls and also add handy aliases
if [ -x /usr/bin/dircolors ]; then
    test -r ~/.dircolors && eval "$(dircolors -b ~/.dircolors)" || eval "$(dircolors -b)"
    alias ls='ls --color=auto'
    #alias dir='dir --color=auto'
    #alias vdir='vdir --color=auto'

    alias grep='grep --color=auto'
    alias fgrep='fgrep --color=auto'
    alias egrep='egrep --color=auto'
fi

 # some more ls aliases
alias ll='ls -alF'
alias la='ls -A'
alias l='ls -CF'

 # Alias definitions.
 # You may want to put all your additions into a separate file like
 # ~/.bash_aliases, instead of adding them here directly.
 # See /usr/share/doc/bash-doc/examples in the bash-doc package.

if [ -f ~/.bash_aliases ]; then
    . ~/.bash_aliases
fi

 # enable programmable completion features (you don't need to enable
 # this, if it's already enabled in /etc/bash.bashrc and /etc/profile
 # sources /etc/bash.bashrc).
 #if [ -f /etc/bash_completion ] && ! shopt -oq posix; then
 #    . /etc/bash_completion
 #fi

答案1

由于您tty -s在.profile文件中使用，并且使用 登录时登录 shell 没有 TTY ssh -T，因此该命令将失败并设置$?为 1。

这是预期的完整命令

tty -s && mesg n

依赖于此，因此如果没有 TTY，则不会执行（通过和 来mesg n“禁止来自其他用户的消息” ，我相信现在很少使用它）。talkwrite

要“修复”此问题，只需注释掉或从 中删除该行即可.profile。对任何事都不会产生什么影响。

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