一份bash shell的PS1命令提示符设置脚本

版本:

Arch on x220 测试通过。

┌─[✗]─[root@tp]─[/usr]─[0+7]─[96%=]
└─# uname -a
Linux tp 3.6.9-1-ARCH #1 SMP PREEMPT Tue Dec 4 08:04:10 CET 2012 x86_64 GNU/Linux


提示:

最好是source到全局bashrc文件中。


代码:

#!/bin/bash
# bash PS1 setter
# install: echo '. ./ps1bash' >> ~/.bashrc
# uninstall: unset PROMPT_COMMAND;PS1='[\u@\h \W]\$ '
# https://wiki.archlinux.org/index.php/Color_Bash_Prompt

txtblk='\e[0;30m' # Black - Regular
txtred='\e[0;31m' # Red
txtgrn='\e[0;32m' # Green
txtylw='\e[0;33m' # Yellow
txtblu='\e[0;34m' # Blue
txtpur='\e[0;35m' # Purple
txtcyn='\e[0;36m' # Cyan
txtwht='\e[0;37m' # White
bldblk='\e[1;30m' # Black - Bold
bldred='\e[1;31m' # Red
bldgrn='\e[1;32m' # Green
bldylw='\e[1;33m' # Yellow
bldblu='\e[1;34m' # Blue
bldpur='\e[1;35m' # Purple
bldcyn='\e[1;36m' # Cyan
bldwht='\e[1;37m' # White
unkblk='\e[4;30m' # Black - Underline
undred='\e[4;31m' # Red
undgrn='\e[4;32m' # Green
undylw='\e[4;33m' # Yellow
undblu='\e[4;34m' # Blue
undpur='\e[4;35m' # Purple
undcyn='\e[4;36m' # Cyan
undwht='\e[4;37m' # White
bakblk='\e[40m'   # Black - Background
bakred='\e[41m'   # Red
bakgrn='\e[42m'   # Green
bakylw='\e[43m'   # Yellow
bakblu='\e[44m'   # Blue
bakpur='\e[45m'   # Purple
bakcyn='\e[46m'   # Cyan
bakwht='\e[47m'   # White
txtrst='\e[0m'    # Text Reset

#\342\224\214
#[liao@tp bin]$ echo -e "\0342\0224\0214"
#┌
r='\342\224\214'

#\342\224\200
#[liao@tp bin]$ echo -e "\0342\0224\0200"
#─
hyphen='\342\224\200'

#\342\224\224
#[liao@tp bin]$ echo -e "\0342\0224\0224"
#└
l='\342\224\224'

#\342\234\227
#[liao@tp bin]$ echo -e "\0342\0234\0227"
#✗
x='\342\234\227'


bat_status()
{
BATTERY=/sys/devices/platform/smapi/BAT0

BATSTATE=`cat $BATTERY/state`
CHARGE=`cat $BATTERY/remaining_percent`

NON='\033[00m'
BLD='\033[01m'
RED='\033[01;31m'
GRN='\033[01;32m'
YEL='\033[01;33m'

COLOUR="$RED"

case "${BATSTATE}" in
   'idle')
   BATSTT="$BLD=$NON"
   ;;
   'charging')
   BATSTT="$BLD+$NON"
   ;;
   'discharging')
   BATSTT="$BLD-$NON"
   ;;
esac

if [ "$CHARGE" -gt "15" ]
then
   COLOUR="$YEL"
fi

if [ "$CHARGE" -gt "30" ]
then
   COLOUR="$GRN"
fi

echo -e "${COLOUR}${CHARGE}%${NON}${BATSTT}"
}

get_ps1()
{
[ $? != 0 ] && lc_rslt=[${txtred}${x}${txtrst}]${hyphen} || unset lc_rslt
[ ${EUID} == 0 ] && uc=${txtred} || uc=${txtylw}
dn=$(ls -l | grep ^d | wc -l);fn=$(expr $(ls | wc -l) - ${dn})
PS1="${r}${hyphen}${lc_rslt}[${uc}\u${txtrst}@${txtcyn}\h${txtrst}]${hyphen}[${txtpur}\w${txtrst}]${hyphen}[${txtgrn}${fn}+${dn}${txtrst}]${hyphen}[$(bat_status)]${txtrst}\n${l}${hyphen}\\$ "
}

PROMPT_COMMAND=get_ps1


效果图:

[用户名@主机]-[当前目录]-[文件数+文件夹数]-[电池剩余百分比 充电状态]


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