Question

我有一个包含大量echo的shell脚本。我想将输出重定向到日志文件。我知道有一个命令调用cmd > logfile.txt，或者在文件echo 'xy' > logfile.txt中执行，但是是否可以在脚本中设置文件名然后自动将所有echo写入此文件？

Answer 1

您可以在脚本之上添加此行：

#!/bin/bash
# redirect stdout/stderr to a file
exec &> logfile.txt

或者只重定向stdout使用：

exec > logfile.txt

Answer 2

我尝试使用以下命令进行管理。这将把输出写入日志文件以及在控制台上打印。

#!/bin/bash

# Log Location on Server.
LOG_LOCATION=/home/user/scripts/logs
exec > >(tee -i $LOG_LOCATION/MylogFile.log)
exec 2>&1

echo "Log Location should be: [ $LOG_LOCATION ]"

Answer 3

您可以使用子shell轻松地将shell脚本的不同部分重定向到文件（或多个文件）：

{
  command1
  command2
  command3
  command4
} > file1
{
  command5
  command6
  command7
  command8
} > file2

Answer 4

LOG_LOCATION="/path/to/logs"    
exec >> $LOG_LOCATION/mylogfile.log 2>&1

Answer 5

#!/bin/sh
# http://www.tldp.org/LDP/abs/html/io-redirection.html
echo "Hello World"
exec > script.log 2>&1
echo "Start logging out from here to a file"
bad command
echo "End logging out from here to a file"
exec > /dev/tty 2>&1 #redirects out to controlling terminal
echo "Logged in the terminal"

输出：

> ./above_script.sh                                                                
Hello World
Not logged in the file
> cat script.log
Start logging out from here to a file
./logging_sample.sh: line 6: bad: command not found
End logging out from here to a file

在此处了解更多信息：http://www.tldp.org/LDP/abs/html/io-redirection.html

将shell脚本中的echo输出重定向到logfile

5 个答案: