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Full Discussion: differentiate between spaces and new-lines
Top Forums Shell Programming and Scripting differentiate between spaces and new-lines Post 302535537 by dips_ag on Friday 1st of July 2011 04:02:53 AM
Old 07-01-2011
differentiate between spaces and new-lines
Hi -

Here's the problem I'm encountering......My script logs in to remote FTP through password-less "sftp" and must get the list of sub-directories under a given path. I know many of the unix commands don't work in "sftp" login so I cannot know which one is a "directory" and which one is a "file". So I thought of copying the output of ls -l command in a file at local unix server and then going thru it to decide which ones are directories.

Having told my end of the story here's what I'm doing?
Code:
 
echo "ls -l $remote_ftp_path" > $batch_file
list_of_sub-dir=`sftp -b $batch_file $USER_ID@$IP_ADDRESS`

What happens?
Value of "list_of_sub-dir" variable has all the info about sub-dir, permissions, size, etc in one single line (as expected):
Code:
sftp> ls -l /remote/ftp/path drwxr-xr-x 2 user group 4096 Jun 13 15:55 remote_dir_1 -rw-r--r-- 1 user group 5090607 Jun 21 08:38 remote_file_1 -rw-r--r-- 1 user group 6917238 Jun 21 08:37 remote_file_2

and so on....

which I want in below format (after stripping "sftp> ls -l /remote/ftp/path")
Code:
 
drwxr-xr-x 2 user group 4096 Jun 13 15:55 remote_dir_1
-rw-r--r-- 1 user group 5090607 Jun 21 08:38 remote_file_1
-rw-r--r-- 1 user group 6917238 Jun 21 08:37 remote_file_2

Then I had a crazy idea of translating (only) spaces (and not new-lines) into commas
Code:
echo $list_of_sub-dir | tr " " ","

here's what I get instead
Code:
sftp>,ls,-l,/remote/ftp/path,drwxr-xr-x,2,user,group,4096,Jun,13,15:55,remote_dir_1,-rw-r--r--,1,user,group,5090607,Jun,21,08:38,remote_file_1,-rw-r--r--,1,user,group,6917238,Jun,21,08:37,remote_file_2

Can anyone please help me to get this? I really don't know what should I do to somehow preserve "\n" (new-lines) in the variable and not confuse them with "spaces"?!

-dips
 

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LEARN ABOUT XFREE86

sftp-server

sftp-server(1M) 					  System Administration Commands					   sftp-server(1M)

NAME

       sftp-server - SFTP server subsystem

SYNOPSIS

       /usr/lib/ssh/sftp-server

DESCRIPTION

       sftp-server implements the server side of the SSH File Transfer Protocol as defined in the IETF draft-ietf-secsh-filexfer.

       sftp-server is a subsystem for sshd(1M) and must not be run directly. There are no options or config settings.

       To enable the sftp-server subsystem for sshd add the following to /etc/ssh/sshd_config:

       Subsystem   sftp     /usr/lib/ssh/sftp-server

       See sshd_config(4) for a description of the format and contents of that file.

       There is no relationship between the protocol used by sftp-server and the FTP protocol (RFC 959) provided by in.ftpd.

EXIT STATUS

       The following exit values are returned:

       0	Successful completion.

       >0	An error occurred.

FILES

       /usr/lib/sftp-server

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWsshdu 		   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Evolving			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       sftp(1), ssh(1), ssh-add(1), ssh-keygen(1), sshd(1M), sshd_config(4), attributes(5)

       To  view  license  terms,  attribution,	and  copyright	for OpenSSH, the default path is /var/sadm/pkg/SUNWsshdr/install/copyright. If the
       Solaris operating environment has been installed anywhere other than the default, modify the given path to access the file at the installed
       location.

AUTHOR

       Markus Friedl

SunOS 5.10							    30 Jul 2003 						   sftp-server(1M)
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