搞砸「/etc/bash.bashrc」無法再編輯

Question

我試圖將PATH導出到/etc/bash.bashrc文件，但我添加了一些無效的標識符。現在我無法從終端訪問諸如ls，nano，vi，gedit等程序，這就是爲什麼無法更正/etc/bash.bashrc文件的原因。如何在這種情況下編輯它？謝謝！

Answer 1

在我的Ubuntu的納米和六節目直播中的/ usr/bin中。所以，你可以嘗試

$ sudo /usr/bin/nano /etc/bash.bashrc 
$ sudo /usr/bin/vi /etc/bash.bashrc 

Answer 2

你可以在命令行上指定像

$ /usr/bin/nano /etc/bash.bashrc 

完整路徑這樣，你可以拉起來nano和編輯。

Answer 3

你可以做兩件事情之一：

1）用vi的完整路徑，編輯/etc/bash.bashrc文件：

/usr/bin/vi /etc/bash.bashrc 

2）更正命令行上的路徑，然後修復：

export PATH=... 
vi /etc/bash.bashrc 

Answer 4

您還可以嘗試運行/bin/sh以獲得「標準」shell。

Answer 5

$ cat /etc/bash.bashrc 
# System-wide .bashrc file for interactive bash(1) shells. 

# To enable the settings/commands in this file for login shells as well, 
# this file has to be sourced in /etc/profile. 

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

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

# 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, overwrite the one in /etc/profile) 
PS1='${debian_chroot:+($debian_chroot)}\u@\h:\w\$ ' 

# Commented out, don't overwrite xterm -T "title" -n "icontitle" by default. 
# If this is an xterm set the title to user@host:dir 
#case "$TERM" in 
#xterm*|rxvt*) 
# PROMPT_COMMAND='echo -ne "\033]0;${USER}@${HOSTNAME}: ${PWD}\007"' 
# ;; 
#*) 
# ;; 
#esac 

# enable bash completion in interactive shells 
#if ! shopt -oq posix; then 
# if [ -f /usr/share/bash-completion/bash_completion ]; then 
# . /usr/share/bash-completion/bash_completion 
# elif [ -f /etc/bash_completion ]; then 
# . /etc/bash_completion 
# fi 
#fi 

# sudo hint 
if [ ! -e "$HOME/.sudo_as_admin_successful" ] && [ ! -e "$HOME/.hushlogin" ] ; then 
    case " $(groups) " in *\ admin\ *) 
    if [ -x /usr/bin/sudo ]; then 
    cat <<-EOF 
    To run a command as administrator (user "root"), use "sudo <command>". 
    See "man sudo_root" for details. 

    EOF 
    fi 
    esac 
fi 

# if the command-not-found package is installed, use it 
if [ -x /usr/lib/command-not-found -o -x /usr/share/command-not-found/command-not-found ]; then 
    function command_not_found_handle { 
      # check because c-n-f could've been removed in the meantime 
       if [ -x /usr/lib/command-not-found ]; then 
      /usr/lib/command-not-found -- "$1" 
        return $? 
       elif [ -x /usr/share/command-not-found/command-not-found ]; then 
      /usr/share/command-not-found/command-not-found -- "$1" 
        return $? 
     else 
      printf "%s: command not found\n" "$1" >&2 
      return 127 
     fi 
    } 
fi