I have a file which contains host info, one host one line
host1
host2
host3
what I want to do is
ssh host1 'my command'
ssh host2 'my command'
ssh host3 'my command'
how can I use one line command to implement it (not complex shell script), thanks
Is this too complex for what you want?
for h in $(<file); do ssh $h 'my command'; done
Another possibility:
cat file | xargs -I% -- ssh % 'my command'
or shorter:
<file xargs -I% -- ssh % 'my command'
or shorter if you are sure you don't have any - option in your ssh command:
<file xargs -I% ssh % 'my command'
while read -r line; do ssh "$line" 'my command'; done < host
The command would read the file line by line, and save each line into the variable $line. And execute your ssh command with the host saving in $line
