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Renaming a file while using SFTP

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Top Forums Shell Programming and Scripting Renaming a file while using SFTP
# 1  
Old 11-14-2011
Renaming a file while using SFTP
Hi All,
I have a script which works perfectly for using SFTP commands.

I use SFTP -b batchfile remoteuser@remoteserver.

This batch file contains a command

cd /dir1
put file1

I am wondering if there is a flag to rename a file on Remote server.

I see the option
rename file1 file1_old in SFTP

This works fine if file1 exists on Remote Server. If it does not then it errors out.

I did not see any force flag on rename command, so any idea on how to FIX IT??

Smilie
# 2  
Old 11-14-2011
'man sftp' yields:
Code:
          put [-P] local-path [remote-path]
               Upload local-path and store it on the remote machine.
               If the remote path name is not specified, it is given
               the same name it has on the local machine.  local-path
               may contain glob(3) characters and may match multiple
               files.  If it does and remote-path is specified, then
               remote-path must specify a directory.  If the -P flag
               is specified, then the file's full permission and
               access time are copied too.

put file1 file1_old should work - give it a go.
# 3  
Old 11-14-2011
Yes I agree if I use

put file1 file1_old

then it will copy file1 from current server to file1_old on remote server.

What I am trying to accomplish is if file1_old exists on remote server then rename it before copying.

so

cd /dir1
rename file1_old file1_old2
put file1 file1_old

Rename command works if file1_old exists on remote server.

If it does not exist then SFTP fails.
# 4  
Old 11-14-2011
Quote:
Originally Posted by Hangman2
Yes I agree if I use

put file1 file1_old

then it will copy file1 from current server to file1_old on remote server.

What I am trying to accomplish is if file1_old exists on remote server then rename it before copying.

so

cd /dir1
rename file1_old file1_old2
put file1 file1_old

Rename command works if file1_old exists on remote server.

If it does not exist then SFTP fails.
the rename operation fails, not the entire SFTP session (IIRC).So if rename fails => there's nothing to rename => put file1 file1_old.
If rename succeeds => do the same (put file1 file1_old).

I guess I'm missing something obvious.....
# 5  
Old 11-14-2011
By default in batch mode sftp commands will terminate when an error is encountered. Per the man page, this behavior can be changed by prefixing the command with a "-":

Code:
 -b batchfile
             Batch mode reads a series of commands from an input batchfile instead of stdin.  Since it lacks user interaction it should
             be used in conjunction with non-interactive authentication.  A batchfile of "-" may be used to indicate standard input.
             sftp will abort if any of the following commands fail: get, put, rename, ln, rm, mkdir, chdir, ls, lchdir, chmod, chown,
             chgrp, lpwd, df, and lmkdir.  Termination on error can be suppressed on a command by command basis by prefixing the command 
             with a "-" character (for example, -rm /tmp/blah*).

These 2 Users Gave Thanks to in2nix4life For This Post:
Hangman2 vgersh99
# 6  
Old 11-14-2011
Quote:
Originally Posted by in2nix4life
By default in batch mode sftp commands will terminate when an error is encountered. Per the man page, this behavior can be changed by prefixing the command with a "-":

Code:
 -b batchfile
             Batch mode reads a series of commands from an input batchfile instead of stdin.  Since it lacks user interaction it should
             be used in conjunction with non-interactive authentication.  A batchfile of "-" may be used to indicate standard input.
             sftp will abort if any of the following commands fail: get, put, rename, ln, rm, mkdir, chdir, ls, lchdir, chmod, chown,
             chgrp, lpwd, df, and lmkdir.  Termination on error can be suppressed on a command by command basis by prefixing the command 
             with a "-" character (for example, -rm /tmp/blah*).

Ah, good to know - thanks.
Missed the 'batch mode' bit from the OP description.
# 7  
Old 11-14-2011
Smilie

Works like a charm.......

Thanks in2nix4life. Now I know why I did not get "A" grades. Smilie
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