在Terminal中的每个命令之间增加时间分割线，提高可阅读性。打开Terminal应用，确认当前位置在用户根目录中，将.bash_profile文件备份。
cp .bash_profile .bash_profile-backup
编辑.bash_profile文件，在最后添加以下代码：
############################################
# Modified from emilis bash prompt script
# from https://github.com/emilis/emilis-config/blob/master/.bash_ps1
#
# Modified for Mac OS X by
# @corndogcomputer
###########################################
# Fill with minuses
# (this is recalculated every time the prompt is shown in function prompt_command):
fill=”— ”
reset_style=”\\[\\033[00m\\]”
status_style=$reset_style”\\[\\033[0;90m\\]” # gray color; use 0;37m for lighter color
prompt_style=$reset_style
command_style=$reset_style”\\[\\033[1;29m\\]” # bold black
# Prompt variable:
PS1=”$status_style””$fill \\t\\n””$prompt_style””${debian_chroot:+($debian_chroot)}\\u@\\h:\\w\\$””$command_style ”
# Reset color for command output
# (this one is invoked every time before a command is executed):
trap ”echo -ne “\\033[00m”” DEBUG
function prompt_command {
# create a $fill of all screen width minus the time string and a space:
let fillsize=${COLUMNS}-9
fill=””
while [ “$fillsize” -gt “0” ]
do
fill=”-${fill}” # fill with underscores to work on
let fillsize=${fillsize}-1
done
# If this is an xterm set the title to user@host:dir
case “$TERM” in
xterm*|rxvt*)
bname=`basename “${PWD/$HOME/~}”`
echo -ne “\\033]0;${bname}: ${USER}@${HOSTNAME}: ${PWD/$HOME/~}\\007”
;;
*)
;;
esac
}
PROMPT_COMMAND=prompt_command
保存退出，重新打开Terminal，即可看见效果。