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例子:在脚本中重定向输出STDOUT
exec - 永久重定向命令,exec命令启动一个新的shell并使用STDOUT文件描述符重定向到文件,脚本中输出的所有文件会被Make report file stdout
#!/bin/bash # ################################################# # parameters for script # du -S /var/log | sort -rn | sed '{11,$D;=}' | sed 'N; s/ / /' | gawk '{printf ":" $1 " " $2 " " $3 " "}' # ################# Main script ################################ # dir_check="/var/log/ /home/* " # DATE=$(date "+%y%m%d") # exec 1>> disk_space_$DATE.rpt #Make report file stdout # echo echo "#1.Top ten disk space usage" echo "#2.the $dir_check directory" echo # for check_loop in $dir_check do du -S $check_loop | sort -rn | sed '{11,$D;=}' | sed 'N; s/ / /' | gawk '{printf $1 ")" " " $2 " " $3 " "}' done # #