In my .bashrc
I define a function which I can use on the command line later:
function mycommand() {
ssh [email protected] cd testdir;./test.sh "$1"
}
When using this command, just the cd
command is executed on the remote host; the test.sh
command is executed on the local host. This is because the semicolon separates two different commands: the ssh
command and the test.sh
command.
I tried defining the function as follows (note the single quotes):
function mycommand() {
ssh [email protected] 'cd testdir;./test.sh "$1"'
}
I tried to keep the cd
command and the test.sh
command together, but the argument $1
is not resolved, independent of what I give to the function. It is always tried to execute a command
./test.sh $1
on the remote host.
How do I properly define mycommand
, so the script test.sh
is executed on the remote host after changing into the directory testdir
, with the ability to pass on the argument given to mycommand
to test.sh
?
Do it this way instead:
function mycommand {
ssh [email protected] "cd testdir;./test.sh \"$1\""
}
You still have to pass the whole command as a single string, yet in that single string you need to have $1
expanded before it is sent to ssh so you need to use ""
for it.
Another proper way to do this actually is to use printf %q
to properly quote the argument. This would make the argument safe to parse even if it has spaces, single quotes, double quotes, or any other character that may have a special meaning to the shell:
function mycommand {
printf -v __ %q "$1"
ssh [email protected] "cd testdir;./test.sh $__"
}
function
, ()
is not necessary.