I would like to have a new script to perform the below task .


I have a file called dummy.txt , the content of this file is as below .

aaa.prn
bbb.prn
ccc.prn

I would like to have a script which can do

1) check dummy.txt
2) then copy these files ( but with other extension .xls ) from a specify directory to another server
eg. scp the files /tmp/aaa.xls , /tmp/bbb.xls , /tmp/ccc.xls to /tmp of another server


can advise what can i do ?

thanks in advance.

What have you tried before? Can you perform the steps at the command prompt?

yes , I can perform the steps at the command prompt , can advise how to write the script ?

thx

I think that actually was a hint for you to post actual code. It's more efficient that way to see where you get stuck and help you with that part.

Also remembering that a script is just what you enter on the command line put in a file

thx reply ,

i just tried it , it seems works .


for file in $(< dummy.txt); do

base=${file%.prn}

scp /tmp/$base.xls remote:/tmp

done

But I have another requirement -

actually , the file name in dummy.txt have two type of prefix , one is xxx ( eg. xxxfile.prn ) , another one is yyy ( eg. yyyfile.prn ) , if the file is xxx , then copy to /tmp of another server , if the file is yyy then copy to /tmp1 of another server , can advise what can i do ?

You should bookmark these
http://rute.2038bug.com/index.html.gz
http://tldp.org/LDP/Bash-Beginners-G...tml/index.html
http://www.tldp.org/LDP/abs/html/

You'll save yourself a lot of time in the long run if you learn bash and associated tools.

Try the Substring Extraction section here http://tldp.org/LDP/abs/html/string-manipulation.html to extract eg xxx or yyy from the $base & then match it.

Assuming you have a recent enough version of bash, the regex comparison operator =~ will probably be useful.

thanks your suggestion, but I have a bit urgent to fix it , can provide the hits ?

thx

Please use [code][/code] tags around your code and data, to preserve formatting and to improve readability. Please do not use quote tags, colors, or other fancy formatting.

You might want to try giving us some actual examples of filenames and directory trees to work with, rather than trying to describe them.

Anyway, your loop is very close, except: don't read lines with for!

Use a while+read loop instead. Or read the file into an array first with the mapfile command, and loop over that.

As for your new requirement, I suggest simply adding a case statement to the loop to test the naming pattern of each file, and run the appropriate command.

It would also be a good idea to add some intermediate tests too, to ensure that each file is actually available, as is the target, before trying to move it.


The Bash Guide is a good resource that covers all the basics of scripting. Check it out:
http://mywiki.wooledge.org/BashGuide