弄乱了bash.bashrc文件,命令不再起作用了

尝试安装Java,我尝试将其添加到可执行路径中：

    export PATH=/usr/lib/jvm/jdk1.7.0_60/bin:$PATH

在系统范围的/etc/bash.bashrc文件中.

由于某些原因,这不起作用,所以我使用：

JAVA_HOME=/usr/lib/jvm/jdk1.7.0_60
PATH=$PATH:$HOME/bin:$JAVA_HOME/bin
export JAVA_HOME
export JRE_HOME
export PATH

最初这似乎工作得很好,除了现在sudo,ls,发现,其他一切都不再起作用了.

然后我试图擦除这些行并重新启动系统,但命令不可用;错误是：

Command 'sudo' is available in '/usr/bin/sudo'
The command Could not be located because '/usr/bin' is not included in the PATH  environment variable.
sudo: command not found

为了解决这个问题,我在/etc/bash.bashrc中复制了/ etc / environment的内容,添加了一行export PATH = $PATH：/usr/lib/jvm/jdk1.7.0_60/bin然后输入source / etc / bash .bashrc中.

同样,一切正常,但只在一个终端窗口而不是重启后.

我尝试了其他的东西,目前在/etc/bash.bashrc的末尾有以下几行：

export PATH=$PATH:/usr/lib/jvm/jdk1.7.0_60/bin/
export JAVA_HOME=$JAVA_HOME:/usr/lib/jvm/jdk1.7.0_60/bin/java/

但我必须在所有终端窗口中键入source / etc / environment和source /etc/bash.bashrc来获取java和命令.这就像我的改变不是永久性的.

目前,清除终端窗口中echo $PATH的结果是：

/usr/lib/jvm/jdk1.7.0_60/bin/

在源/ etc / environment之后它变成：

/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games

最后,在源/etc/bash.bashrc之后它是：

/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/lib/jvm/jdk1.7.0_60/bin/

完整的bash.bashrc文件：

# 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 [ -f /etc/bash_completion ] && ! shopt -oq posix; then
#    . /etc/bash_completion
#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/bin/python /usr/lib/command-not-found -- "$1"
                return $?
            elif [ -x /usr/share/command-not-found/command-not-found ]; then
                /usr/bin/python /usr/share/command-not-found/command-not-found -- "$1"
               return $?
        else
           printf "%s: command not found\n" "$1" >&2
           return 127
        fi
    }
fi

export PATH=$PATH:/usr/lib/jvm/jdk1.7.0_60/bin/
export JAVA_HOME=$JAVA_HOME:/usr/lib/jvm/jdk1.7.0_60/bin/java/

有人可以帮帮我吗？我在Ubuntu 12.04 LTS下

解决方法:

尝试将bash.bashrc恢复为默认设置,然后在〜/ .bashrc文件中编辑PATH的本地副本.
换句话说,把最后两行：

export PATH=$PATH:/usr/lib/jvm/jdk1.7.0_60/bin/
export JAVA_HOME=$JAVA_HOME:/usr/lib/jvm/jdk1.7.0_60/bin/java/

在你的〜/ .bashrc文件而不是/etc/bash.bashrc中.您可能必须重新启动才能进行更改.

如果可行,并且您仍希望更改在系统范围内,则在/ etc / environment中附加PATH变量以获取Java路径.

弄乱了bash.bashrc文件,命令不再起作用了

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