人氣少了，拿個以前的練習(xí)灌灌水吧。

twf_cc

以前寫的，用來加強對 bash builtin 的記憶..hehehe
灌水相當(dāng)合用
#! /bin/bash
# A little game to guess bash builtin command
# written by no_spam_twf_cc@yahoo.com.hk
# $date: Jul 20,2004 $PROG: guess.sh   $LICINCE: PUBLIC DOMAIN

# Program name
PROG=${0##*/}

# array, contains command name of bash builtin
KEYWORD=(alias bind builtin cd compgen continue dirs echo eval
         exit false fg for getopts help if kill local popd pushd
         read return set shopt suspend time trap type ulimit unalias
         until wait bg break case command complete
         declare disown enable exec export fc for function hash history
         jobs let logout printf pwd readonly select shift source test
         times true typeset umask unset variables while \: \(\( \[\[ \[)

# Get a random word to guess
WORD=${KEYWORD[$(($RANDOM%${#KEYWORD[@]}))]}

# Length of the word
LENGTH="${#WORD}"

# Split the word , array
SPLIT_WORD=($(echo $WORD | sed 's/./& /g'))

# replace the word by -
GUESS=$(echo $WORD | sed 's/./-/g')

# function to get user input
function MyGuess {
echo -n 'Guess the command: ' >&2
read -n 1
}

# function, displays information
function ShowInfo {
echo "The builtin command contains $LENGTH letters"
echo 'Guess the letter one by one.'
echo "$GUESS"
}
# header
cat<<!
#######################################################

$(echo "Hello $(whoami)", welcome to $(echo $PROG)
It is a little game to guess BASH builtin command
Here we go.

#######################################################

!

ShowInfo
# main loop

for ((i=0 ; i<$LENGTH ; ++i))
do
     MyGuess
     if [ "$REPLY" != "${SPLIT_WORD[$i]}" ] ; then
           echo
           echo -e "The letter is \033[31m${SPLIT_WORD[$i]}\033[39m"
     else
           echo
           echo -e "\033[32mRight.\033[39m"
     fi

           ANSWER="$ANSWER${SPLIT_WORD[$i]}"
           DISPLAY="${ANSWER}${GUESS(($i + 1))}"
           echo "$DISPLAY"

done
echo 'Thankyou for playing.'
echo ""
# Display usage
help $(echo $WORD)

重看自己的「作品」，真是進步不大 ...

網(wǎng)中人

寫得不錯啊! 加油!

只是, 以 shell 版的宗旨來說, 不在乎人氣啊....

twf_cc

    謝謝

twf_cc

還是用中文解析一下，免班竹說我 show script 沒註解..
也可多灌一篇水..hehehe
# 程序名 bash 寫法,等如 PROG=`basename $0`
PROG=${0##*/}

# 將 bash 的內(nèi)建命令作為猜字的源，以數(shù)組形式放入變量 $KEYWORD
KEYWORD=(alias bind builtin cd compgen continue dirs echo eval
        exit false fg for getopts help if kill local popd pushd
        read return set shopt suspend time trap type ulimit unalias
        until wait bg break case command complete
        declare disown enable exec export fc for function hash history
        jobs let logout printf pwd readonly select shift source test
        times true typeset umask unset variables while \: \(\( \[\[ \[)
# 這個變量 $WORD 是由 ${KEYWORD[@]} 隨機生成,
# 分開來看, [(( $RANDOM%${#KEYWORD[@] ))] ,這個
# $RANDOM 會隨機生成一個數(shù)字 0-32768(?) % 是取寞 ,
# ${#KEYWORD[@]} 反回 KEYWORD 數(shù)組字串的個數(shù)總數(shù),
# 如是成為 $KEYWORD 下標(biāo) ，那可以是 WORD=${KEYWORD[0]}
# 也可是 WORD=${KEYWORD[20]} , 是由RANDOM 去選的,
# 不會大過 KEYWORD 字符的總數(shù)

WORD=${KEYWORD[$(($RANDOM%${#KEYWORD[@]}))]}

# 這個隨機生成的字符長度
LENGTH="${#WORD}"

# 再將 $WORD 變成一個數(shù)組，用sed 將字母以空格分開
# 執(zhí)行的結(jié)果以 SPLIT_WORD=( )方法成為數(shù)組
SPLIT_WORD=($(echo $WORD | sed 's/./& /g'))

# 只是以 - 代替那些字母
GUESS=$(echo $WORD | sed 's/./-/g')

# 函數(shù)一個，用來取得輸入
# read -n 1 設(shè)定輸入只讀一個鍵,請看 Bash Manual
function MyGuess {
echo -n 'Guess the command: ' >&2
read -n 1
}

# function, displays information
# 沒什麼，函數(shù)一個
function ShowInfo {
echo "The builtin command contains $LENGTH letters"
echo 'Guess the letter one by one.'
echo "$GUESS"
}
# here document,用來搞搞打招呼
cat<<!
#######################################################

$(echo "Hello $(whoami)", welcome to $(echo $PROG)
It is a little game to guess BASH builtin command
Here we go.

#######################################################

!

ShowInfo
# main loop

for ((i=0 ; i<$LENGTH ; ++i))
do
     MyGuess
# 測試你的輸入是否和SPLIT_WORD 的每個字相同,相同就打印
# Right (綠色) ,不同打印該字母(紅色)
     if [ "$REPLY" != "${SPLIT_WORD[$i]}" ] ; then
           echo
           echo -e "The letter is \033[31m${SPLIT_WORD[$i]}\033[39m"
     else
           echo
           echo -e "\033[32mRight.\033[39m"
     fi
# ANSWER 是空的, 但每一字母由 ${SPLIT_WORD[$i]}
# 會傳回 ANSWER , 我要把猜過了的字母打印，沒猜的還是以
# - 顯示 ，那個 $GUESS(($i + 1)) 會隨 主 loop增加 1
# 等于 ${GUESS:0} ${GUESS:1} ,${GUESS:n}, 這個是 bash 的    #${varffset}

         
           ANSWER="$ANSWER${SPLIT_WORD[$i]}"
           DISPLAY="${ANSWER}${GUESS(($i + 1))}"
# 顯示以 s---- sl--- sle-- 的方式
           echo "$DISPLAY"

done
echo 'Thankyou for playing.'
echo ""
# Display usage
help $(echo $WORD)

手也累了，各位大大，小弟文筆差，有錯見諒

waker

支持原創(chuàng)

waker

既然是bash
GUESS=$(echo $WORD | sed 's/./-/g') 何不直接用bash?
GUESS=${$WORD//?/-}

twf_cc

哈哈，那時沒想到，你改得好,!! 班竹高人!! 謝謝

waker

GUESS=${WORD//?/-}
寫錯了

twf_cc

哈哈,我沒試，看來沒問題便趕快拍馬p , 哈哈哈 .....

tonyfu

看的我有點迷糊了,,

以我這水平看注釋還不夠詳細,,哈哈哈哈