bash 将 shell 脚本输出到控制台和文件
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output of shell script to console and file
提问by
I have shell script in Linux like below
我在 Linux 中有 shell 脚本，如下所示
#!/bin/bash
LOG_LOCATION=/home/$USER/logs
exec > >(tee /home/$USER/logs/"") 2>&1
[ $# -ne 1 ] && { echo "Usage : exec 2>&1 | tee /home/logging/""
table ";exit 1; }
table=
TIMESTAMP=`date "+%Y-%m-%d"`
touch /home/$USER/logs/${TIMESTAMP}.success_log
touch /home/$USER/logs/${TIMESTAMP}.fail_log
success_logs=/home/$USER/logs/${TIMESTAMP}.success_log
failed_logs=/home/$USER/logs/${TIMESTAMP}.fail_log
#Function to get the status of the job creation
function log_status
{
status=
message=
if [ "$status" -ne 0 ]; then
echo "`date +\"%Y-%m-%d %H:%M:%S\"` [ERROR] $message [Status] $status : failed" | tee -a "${failed_logs}"
#echo "Please find the attached log file for more details"
exit 1
else
echo "`date +\"%Y-%m-%d %H:%M:%S\"` [INFO] $message [Status] $status : success" | tee -a "${success_logs}"
fi
}
`hive -e "create table testing.${table} as select * from fishing.${table}"`
cp /home/$USER/logs/"" /home/$USER/debug/""
g_STATUS=$?
log_status $g_STATUS "Hive create ${table}"
echo "***********************************************************************************************************************************************************************"
If I have this in my shell script
如果我的 shell 脚本中有这个
exec> /home/logging/"" 2>&1
Then I am getting logs only on console not on the redirected file.
然后我只在控制台上而不是在重定向文件上获取日志。
If I have this in my script
如果我的脚本中有这个
exec > >(tee trace.log) 2>&1
Then I am having logs on the redirected file but not on the console.
然后我在重定向的文件上有日志，但没有在控制台上。
How can I have logs both on console and redirected file
如何在控制台和重定向文件上都有日志
采纳答案by anubhava
You can use process substitution with execbuiltin:
您可以使用exec内置的进程替换：
#!/usr/bin/bash
date 2>&1 | tee ""
to redirect both stdout and stderr to a file as as well as show it in terminal.
将 stdout 和 stderr 重定向到一个文件并在终端中显示它。
回答by Alec Bennett
The purpose of the teecommand is specifically intended to direct the output to both a file and to the terminal, which is what it sounds like you're wanting. This can be replicated pretty easily with something like the following:
该tee命令的目的是专门将输出定向到文件和终端，这听起来像是您想要的。这可以很容易地复制，如下所示：
script.sh:
脚本.sh：
##代码##Then, running the command with ./script.sh abc.txtwill produce the output of the date command to the terminal as well as the file abc.txt
然后，运行命令 with./script.sh abc.txt将产生 date 命令的输出到终端以及文件abc.txt
In your case, exec 2>&1 | tee /home/logging/"$1"should correctly produce the results you want, but you will need to call the script with that argument carefully. That assumes the /home/loggingdirectory exists, and you call the script above with something like ./script log.txt
在您的情况下，exec 2>&1 | tee /home/logging/"$1"应该正确地产生您想要的结果，但您需要小心地使用该参数调用脚本。假设该/home/logging目录存在，并且您使用类似的内容调用上面的脚本./script log.txt
