SCP

Swakoo · 09-19-2005, 03:54 AM

I'm doing some cron job to automate scp of database files to a backup server.
is there anyway i can echo the output by scp to a log file?

Tried >> but doesn't work

homey · 09-20-2005, 01:12 PM

Output redirection:
0 = stdin input device such as keyboard
1 = stdout output device usually the console
2 = stderr error message usually displayed at the console

For example: I will run a command which produces an error...
cd /home
ls nofile > test.txt 2>&1
I can view the results with the command: cat test.txt
ls: nofile: No such file or directory

So that command only produced and error which was redirected to test.txt

Now, I run a different command:
ls -al > test.txt 2>&1
I view the results with cat test.txt and see there are no errors and only standard output was redirected to test.txt
total 32
drwxr-xr-x 3 root root 4096 Sep 20 14:12 .
drwxr-xr-x 23 root root 4096 Sep 20 10:05 ..
-rw-r--r-- 1 root root 9168 Sep 20 12:41 file.txt
drwxr-xr-x 20 rctech rctech 4096 Sep 16 16:04 rctech
-rw-r--r-- 1 root root 0 Sep 20 14:12 test.txt

Swakoo · 09-23-2005, 05:58 AM

hi homey thanks for the tip, i will try to incorperate that..
but have some queries

i did a bit of googling ("output redirection" helps!)

1)
ls -al > test.txt 2>&1 is the same as ls -al > test.txt
The only difference is that the latter command will output only standard output (by default?) to the file... where the first outputs standard output and error output.. right?

2) 2>&1 after specifying the output redirection effectively means first redirects the standard output to a textfile, and then redirects the standard error to the same location as the standard output? Am i right?

Ok I try to incorperate with my scp statement but it doesn't work.. am i doing it wrongly..?

Quote:

scp -rp /home/user/db_files/filename.sql.gz user@127.0.0.1:/home/user/userdb_backup/ >> /home/user/cron/logs/dailybackup_log.txt 2>&1

I used >> because I want to concatanate the output to the file... i tried with > also ... but to no avail

but both gave a blank.. am i missing something?

Swakoo · 09-25-2005, 11:02 PM

anyone?

Swakoo · 10-06-2005, 12:00 AM

up.. anyone?

Swakoo · 10-10-2005, 11:12 PM

anyone?

cos I wanna store scp output into a text file..

like every transfer of file, the following will be output on screen

dbname-2005-10-09.sql.gz 100% 13KB 13.1KB/s 00:00

but when i use output redirection, not only the output was not shown on screen (due to output redirection), nothing was stored in the text file. even after I set it chmod 777

so anyone...?