DN=1$(date+%d) DN=$[DN-100] DT="$MN月$DN日 ${WEEKDAYS[$WEEKDAY]}" echo"$DT" } # usage: rand_digit # 随机数字,0-9 rand_digit() { S="$(date +%N)" echo"${S:5:1}" } # usage: seconds_of_date [ [<time>]] # 获取指定日期的秒数(自1970年) # 比如:seconds_of_date...
#!/bin/bash #get the month, day, and year of the current date TIME_OF_BACKUP=`date +%m-%d-%y` #create a backup file using the current date in its name DESTINATION=/path/[BACKUP FOLDER]-$TIME_OF_BACKUP.tar.gz #the folder that contains the files that we want to backup TARGET_FOLD...
Let’s now calculate the time elapsed using date. Let’s create an elapsed_time.sh script: start=$(date +%s) sleep 5 sleep 7 end=$(date +%s) echo "Elapsed Time: $(($end-$start)) seconds" We use $() to initialize start and end variables. $() is for command substitution. So,...
/bin/bash -x echo"Time:$(date)" echo"User:$USER" echo"Home:$HOME" $ bash -x test.sh ++[test.sh::3]date +[test.sh::3]echo'Time: Mon 11 Jul 2022 11:35:08 PM CST' Time: Mon 11 Jul 2022 11:35:08 PM CST +[test.sh::4]echo'User: wbourne ' User: wbourne +[test.sh...
使用shell实现对linux系统的大部分管理,例如:date 文件管理 用户管理 权限管理 磁盘管理 网络管理 软件管理 应用管理 ... Bash 两种方式 1.输入命令方式: 效率低,适合少量工作 2. shell script (脚本方式): 效率高,适合大量工作 命令方式: [root@CentOS7 ~]# date #获取当前时间 ...
bash下time是一个很有用的命令,它可以为一段脚本或一个程序的执行计时,这通常在粗略比较程序执行效率的时候很方便。但是你会发现,time命令输出的时间文字不能被简单地重定向,例如重定向至一个文本文件,只能显示在屏幕上,这对于非交互计时很不方便。例如: $timefind . -name "mysql.sh" >1.txt real ...
TimeStamp变量是一种用于存储时间信息的变量。在带有avconv的bash脚本中,当TimeStamp变量停止工作时,可能是由于以下原因之一: 1. 未正确定义TimeStamp变量:请确保在...
How can I get UTC time in a bash script variable?Hi I have a script that needs utc time and I am using eDateTime=`date +"%Y%m%d_%H%M%S"` It isnt returning UTC time from what I can see. Any tips? Many thanksPosted on Jul 5, 2022 11:50 AM Me too Reply ...
This simple script is useful for demonstrating just what timeout does because it does not always do exactly what you might expect. $ cat longcmd.sh #!/bin/bash trap 'echo "'date': ouch!"' 15 echo "'date': Starting" sleep 20 echo "'date': Stage Two" sleep 20 echo "'date': ...
# Use bash for the shell SHELL ["/bin/bash", "-o", "pipefail", "-c"] # Create a script file sourced by both interactive and non-interactive bash shells ENV BASH_ENV /home/user/.bash_env RUN touch "${BASH_ENV}" RUN echo '. "${BASH_ENV}"' >> ~/.bashrc # Download and ...