linux – 如何在bash脚本中使用文件描述符3中的“read”读取?
发布时间:2020-12-13 18:49:55 所属栏目:Linux 来源:网络整理
导读: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# t
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 这模拟了更多命令..
确保输入超过15行的文件名称.. 那么,我如何使用文件描述符3(它是stdin的副本)中的“read”来读取. 解决方法
尝试
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