Using sed to strip sftp from url

[jlittle]

Not exactly what you asked, Xplorer4x4, but why use subprocesses and pipes when bash can do it natively and cleanly:

strippedurl=/${url#sftp://*/}

One sees that sed stuff a lot in Gnu scripts which have to run on the old Bourne shell, and can't use bashisms. People hack configure scripts and pick up practices like that from 20 years ago. However, the ${x#removed} construct is POSIX IIUC.

[james147]

Another option would be something like:

stripedurl=`echo "${url}" | sed "s/^sftp:\/\/[^\/]*//"`

That would be better, though I tend to replace the seperator character with one that doesn't apear so often in the pattern like:

stripedurl=`echo "${url}" | sed "s=^sftp://[^/]*=="`

as it makes reading it easier.

To be honest I am not sure why I didn't jump to this solution right away now should teach me to not pay that much attention to what I write.

[kubicle]

Another option would be something like:

stripedurl=`echo "${url}" | sed "s/^sftp:\/\/[^\/]*//"`

or (for easier readability):

stripedurl=`echo "${url}" | sed "s+^sftp://[^/]*++"

or:

stripedurl=`echo "${url}" | sed "s+^.*//[^/]*++"`

(I'm sure a ninja could make it shorter still )

[james147]

It would probably work with 'sed -r'

Ahh, yes, I was swearing that the regex was correct but couldn't figure out why it didn't work... I should really read the man pages more often.

stripedurl=`echo "${url}" | sed -r 's+sftp://(\w*@)?\w*(\.\w*)?++'`

Is what you want to use Xplorer4x4, that should reduce all of the following:
sftp://user@host.domain/a/path/on/the/server
sftp://user@host/a/path/on/the/server
sftp://host.domain/a/path/on/the/server
sftp://host/a/path/on/the/server
to
/a/path/on/the/server

[kubicle]

It is ment to strip sftp://user@hostname.domain/ from the start of a path not just the sftp:// part.

Right you are, of course

It would probably work with 'sed -r'

[james147]

It is ment to strip sftp://user@hostname.domain/ from the start of a path not just the sftp:// part.

[kubicle]

I am trying to use a service menu that calsl a bash script and logs in to a remote server and executes a command on the file or folder. It should work but sed

    stripedurl=`echo "${url}" | sed 's+sftp://\w*@\w*(.\w*)?++'`

Is that supposed to do something like this?:

stripedurl=`echo "${url}" | sed "s/^sftp:\/\///g"`

[Xplorer4x4]

I am trying to use a service menu that calsl a bash script and logs in to a remote server and executes a command on the file or folder. It should work but sed is not stripping sftp from the url path.

url=${1}
    echo "url: $url" # debug line

    if echo "$url" | grep -Ev "s+sftp://\w*@\w*/+/+"; then
echo "Not a valid remote path: $url"
        return 1
    fi # This part checks for the sftp://user@host and returns if it is not found, this should stop it from running on files not accessed via sftp

    stripedurl=`echo "${url}" | sed 's+sftp://\w*@\w*(.\w*)?++'`