Somehow this loop stops after the first element:
$ head -2 hosts lt1001 lt1002 $ head -2 hosts | while read a; do ssh $a "uname -n"; done lt1001The best explanation I could find, comes from a forum post*):
> The "cat list.txt" is providing stdin for the entire "while" loop. It is not > constrained to only the read statement. ssh is eating all of the input > and feeding it to "date" as stdin. And date just ignores the input. Use > the -n option to ssh to stop this from happening.And indeed, this is working now:
$ head -2 hosts | while read a; do ssh -n $a "uname -n"; done lt1001 lt1002Thanks, Perderabo!
*) copied w/o permission