You want to automate copying a directory project from your local machine to multiple remote servers listed in servers.txt. Which approach correctly uses scp in a bash script?

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Linux CLI - SSH and Remote Access

You want to automate copying a directory project from your local machine to multiple remote servers listed in servers.txt. Which approach correctly uses scp in a bash script?

Afor server in $(cat servers.txt); do scp -r project user@$server:~/; done

Bscp -r project user@$(cat servers.txt):~/

Cscp -r project user@servers.txt:~/

Dwhile read server; scp project user@$server:~/; done < servers.txt

Step-by-Step Solution

Solution:

Step 1: Understand looping over servers
To copy to multiple servers, loop over each server name and run scp for each.
Step 2: Check options
for server in $(cat servers.txt); do scp -r project user@$server:~/; done correctly loops over servers and runs scp -r for each. scp -r project user@$(cat servers.txt):~/ tries to use all servers at once, which is invalid. scp -r project user@servers.txt:~/ treats servers.txt as a host. while read server; scp project user@$server:~/; done < servers.txt has syntax error in loop and misses -r for directory.
Final Answer:
for server in $(cat servers.txt); do scp -r project user@$server:~/; done -> Option A
Quick Check:
Loop over servers and scp each separately [OK]

Quick Trick: Use a for loop to scp directory to each server [OK]

Common Mistakes:

Trying to scp to multiple hosts at once
Incorrect loop syntax
Omitting -r for directories

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You want to automate copying a directory project from your local machine to multiple remote servers listed in servers.txt. Which approach correctly uses scp in a bash script?

Step 1: Understand looping over servers

Step 2: Check options

Final Answer:

Quick Check:

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