reassign-stdout.sh

ksh 实现的基于hpux下的性能数据以及故障的采集程序。可以作为新手练手使用

#!/bin/ksh
 # reassign-stdout.sh
 
 LOGFILE=logfile.txt
 
 exec 6>&1           # 将fd #6与stdout相连接.
                     # 保存stdout.
 
 exec > $LOGFILE     # stdout就被文件"logfile.txt"所代替了.
 
 # ----------------------------------------------------------- #
 # 在这块中所有命令的输出就都发向文件 $LOGFILE.
 
 echo -n "Logfile: "
 date
 echo "-------------------------------------"
 echo
 
 echo "Output of \"ls -al\" command"
 echo
 ls -al
 echo; echo
 echo "Output of \"df\" command"
 echo
 df
 
 # ----------------------------------------------------------- #
 
 exec 1>&6 6>&-      # 恢复stdout, 然后关闭文件描述符#6.
 
 echo
 echo "== stdout now restored to default == "
 echo
 ls -al
 echo
 
 exit 0