http://bash.cyberciti.biz/file-management/shell-script-to-simulate-unix-more-command/
#!/bin/bash # Write a shell script like a more command. It asks the user name, the # name of the file on command prompt and displays only the 15 lines of # the file at a time. # ------------------------------------------------------------------------- # Copyright (c) 2007 nixCraft project <http://cyberciti.biz/fb/> # This script is licensed under GNU GPL version 2.0 or above # ------------------------------------------------------------------------- # This script is part of nixCraft shell script collection (NSSC) # Visit http://bash.cyberciti.biz/ for more information. # ------------------------------------------------------------------------- counter=1 echo -n "Enter a file name : " read file if [ ! -f $file ] then echo "$file not a file!" exit 1 fi # read file line by line exec 3<&0 while read line do # pause at line no. 15 if [ $counter -eq 15 ] then counter=0 # reset counter echo " *** Press [Enter] key to continue ..." read -u 3 enterKey fi echo $line (( counter++ )) done < $file 这模拟更多的命令..我得到这个错误..
阅读：26：非法选项-u
请确保input超过15行的文件的名称..此外，我读了“读”的手册页，我没有得到像“-u”的选项..
那么，我如何阅读从文件描述符3（这是stdin的副本）“读取”。
尝试
read key <&3
也可以让bash把一个文件描述符分配给一个变量; 下一个空闲描述符号将从10开始分配。例如：
#!/bin/bash FILENAME="my_file.txt" exec {FD}<${FILENAME} # open file for read, assign descriptor echo "Opened ${FILENAME} for read using descriptor ${FD}" while read -u ${FD} LINE do # do something with ${LINE} echo ${LINE} done exec {FD}<&- # close file
只是为了纪录，这是另一个更多的脚本：
# Author: Steve Stock # http://www.linuxjournal.com/article/7385 (comments) shmore() { LINES="" while read -d $'\n' line; do printf "%s\n" "$line" #echo "$line" LINES=".${LINES}" if [[ "$LINES" == "......................." ]]; then echo -n "--More--" read < /dev/tty LINES="" fi done return 0 } shmore < file.txt
在这里找到： http : //codesnippets.joyent.com/posts/show/1788