每次在Linux上运行Shell脚本时都会创建一个新目录

Question

I'm trying to create a shell script that copies .log files from one directory to a new directory, with a new name each time the script is run.

For example lets say there's File1.log, File2.log, File3.log in /home/usr/logs

and when this script runs, I want them to be copied to a new location /home/usr/savedlogs/Run1 and the next time it runs... /home/usr/savedlog/Run2 and so on...

I'm not sure if this would be used:

cp /home/usr/logs/{File1.log,File2.log,File3.log} /home/usr/savedlogs

I'm hoping this is possible in a shell script. Thank you all for your help in advance, greatly appreciated!

Answer 1

Here is a simple script that might suffice your requirement:

#!/bin/bash

# Get the number of Run* directories present
newnum=$(ls -ld /home/usr/savedlogs/Run* 2>/dev/null | wc -l)

mkdir -p /home/usr/savedlogs/Run${newnum}

cp /home/usr/logs/*.log /home/usr/savedlogs/Run${newnum}

This will start from Run0 and proceeds from there

Answer 2

If you do not care about incrementing directory names, you can do this with a simple timestamp:

DIR=$(date +%Y%m%d%H%M%S)
mkdir $DIR
cp /home/usr/logs/FileXXX.log /home/usr/savedlogs/$DIR/

This will work as long as your copy operation happens less than once a second.

Answer 3

You may try with newDir=$(ls -l /home/usr/savedlogs | grep Run | wc -l) for getting the existing number of directories.

So the whole script will look like this :

    newDir=$(ls -l /home/usr/savedlogs | grep Run | wc -l)
    mkdir -p /home/usr/savedlogs/Run${newDir}
    cp /home/usr/logs/*.log /home/usr/savedlogs/Run${newDir}

First folder will be Run0 , next Run1 and so on...