今天不知道做什么操作，只要运行命令就会出现bash: __vte_prompt_command: command not found的提示，根据网上的资料，找到了__vte_prompt_command的出处，即/etc/profile.d，其内容如下：
# Copyright © 2006 Shaun McCance <shaunm@gnome.org>
# Copyright © 2013 Peter De Wachter <pdewacht@gmail.com>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
# Not bash or zsh?
[ -n "$BASH_VERSION" -o -n "$ZSH_VERSION" ] || return 0
# Not an interactive shell?
[[ $- == *i* ]] || return 0
# Not running under vte?
[ "${VTE_VERSION:-0}" -ge 3405 ] || return 0
__vte_urlencode() (
# This is important to make sure string manipulation is handled
# byte-by-byte.
LC_ALL=C
str="$1"
while [ -n "$str" ]; do
safe="${str%%[!a-zA-Z0-9/:_\.\-\!\'\(\)~]*}"
printf "%s" "$safe"
str="${str#"$safe"}"
if [ -n "$str" ]; then
printf "%%%02X" "'$str"
str="${str#?}"
fi
done
)
# Print a warning so that anyone who's added this manually to his PS1 can adapt.
# The function will be removed in a later version.
__vte_ps1() {
echo -n "(__vte_ps1 is obsolete)"
}
__vte_osc7 () {
printf "\033]7;file://%s%s\a" "${HOSTNAME:-}" "$(__vte_urlencode "${PWD}")"
}
__vte_prompt_command() {
local pwd='~'
[ "$PWD" != "$HOME" ] && pwd=${PWD/#$HOME\//\~\/}
printf "\033]0;%s@%s:%s\007%s" "${USER}" "${HOSTNAME%%.*}" "${pwd}" "$(__vte_osc7)"
}
case "$TERM" in
xterm*|vte*)
[ -n "$BASH_VERSION" ] && PROMPT_COMMAND="__vte_prompt_command"
[ -n "$ZSH_VERSION" ] && precmd_functions+=(__vte_osc7)
;;
esac
true
记得没有修改这个文件，好像只修改了~/.bashrc这个参数，然后就出现了vte.sh__vte_prompt_command的提示。通过执行source /etc/profile.d/vte.sh即可解决上面的问题，也可把source /etc/profile.d/vte.sh 加入到 ~/.bashrc里面，再执行一下source ~/.bashrc就行了。