bash FTP脚本中的本地文件存在条件

Question

I want to get a file from a server conditional on the non-existence of the file in the local directory. In the final script there will be many files but here is an example just using one.

I'm trying this:

#!/bin/bash
HOST='a.b.c.d'
USER='anonymous'
PASSWD='pass'

ftp -n -v $HOST << EOT
user $USER $PASSWD
prompt
binary

!test -f filename && get /remotedir/remotefilename filename

bye
EOT

I get this error: +bash: get: command not found , presumably because get is called in the local rather than the in the FTP but I don't know how to fix this.

Answer 1

Try this:

Replace

!test -f filename && get /remotedir/remotefilename filename

by

$(test -f filename && echo get /remotedir/remotefilename filename)