I have several files that I ftp each hour. The receiving system needs to have some sort of identifier that they came from the same batch, so I would like to append a timestamp to the filename. That alone is fairly easy, but since I want each file to have the same timestamp (so it can serve as the batch identifier), I cannot figure out how to do this.
So, I have:
file1.txt file2.txt file3.txt
And I want to have:
file1_20141110184303.txt file2_20141110184303.txt file3_20141110184303.txt
Any use of the
date +%Y%m%d%H%M%S after the first use will obviously result in a different values in seconds, so I would like to have the first timestamp appended to the remaining files.