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Old 01-25-2018, 12:44 PM   #1
david-campisi
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Unhappy SCP with variable not working


I have a script to log in to a remote server using scp with a variable. dow Day of week.

scp -p /root/backup/* backupuser@###.###.###.###:/backup/$dow

The files do not end up in $dow Mon, Tue, Wed, Thu or Fri

This command is in a script file backup.sh which is in crontab /home/backupuser/backup.sh

I tried it with scp -p /root/backup/* backupuser@###.###.###.###:`/backup/$dow`
back tic

scp -p /root/backup/* backupuser@###.###.###.###:`/backup/{$dow}
brackets

Works from terminal . backup.sh
scp -p /root/backup/* backupuser@###.###.###.###:/backup/{$dow}

What else can I try?
 
Old 01-25-2018, 01:57 PM   #2
keefaz
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/backup/$dow is supposed to be a directory? Maybe you have to create it before scp
Code:
ssh backupuser@server mkdir /backup/$dow
scp -p /root/backup/* backupuser@server:/backup/$dow

Last edited by keefaz; 01-25-2018 at 02:00 PM.
 
Old 01-25-2018, 02:54 PM   #3
michaelk
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Welcome to LinuxQuestions.

Just for reference what distribution/version are you running?

How did you create the cron job? Is it a system or user cron job? Normally a regular user does not have permission to access the root's home directory (/root).

As stated scp does not create directories so I assume that your /root/backup directory contains only one file.
 
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Old 01-25-2018, 07:21 PM   #4
AwesomeMachine
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In the script, the @ might be problematic. So, enclose the entire destination string in double quotes. Also, cron runs a different environment than a user. You might need to use full paths.
 
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Old 01-25-2018, 07:25 PM   #5
keefaz
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Yes I forgot about full path, reading local email might be usefull if cron errors go there
 
Old 01-29-2018, 06:49 AM   #6
david-campisi
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The folders exist for $dow /backup/Mon
 
Old 01-29-2018, 08:21 AM   #7
michaelk
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Post your entire script.

Are you using ssh keys?

Are you running the script as a system or user cron job? As stated a user will not have permission to access /root directory.

Using full path to scp could help too.
 
Old 01-30-2018, 06:34 AM   #8
david-campisi
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backup.sh

#!/bin/bash
set -xv
scp -p /root/backup/* backupuser@xx.xx.xx.xx:/home/backup/{$dow}


Yes, I am using ssh keys.
This backup.sh runs as a cron job.
 
Old 01-30-2018, 08:06 AM   #9
michaelk
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Where is the variable dow defined?
 
Old 01-30-2018, 11:01 AM   #10
keefaz
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Also, remove the { and } around the variable, it will just add path error
 
Old 01-31-2018, 07:51 AM   #11
david-campisi
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Quote:
Originally Posted by keefaz View Post
Also, remove the { and } around the variable, it will just add path error
The variable defined is in Backupuser on xx.xx.xx.xx

Should I define it under root profile?
 
Old 01-31-2018, 09:36 AM   #12
michaelk
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I would define dow in the script itself.
Code:
#!/bin/bash
set -xv
dow=$(date "+%a")
scp -p /root/backup/* backupuser@xx.xx.xx.xx:/home/backup/$dow
 
Old 02-01-2018, 10:28 AM   #13
david-campisi
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#!/bin/bash
set -xv
dow=$(date "+%a")
scp -p /root/backup/* backupuser@xx.xx.xx.xx:/home/backup/$dow
No directory.

I made crontab for each day of week.
00 11 * * 1 scp -p /root/backup/* backupuser@xx.xx.xx.xx:/home/backup/Mon
00 11 * * 2 scp -p /root/backup/* backupuser@xx.xx.xx.xx:/home/backup/Tue
This worked.

It must be the crontab environment.
 
Old 02-01-2018, 10:58 AM   #14
michaelk
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Your cron environment might be different and as previously suggested using the full path should work.
Code:
dow=$(/bin/date "+%a")
/usr/bin/scp -p /root/backup/* backupuser@xx.xx.xx.xx:/home/backup/$dow
 
Old 02-01-2018, 11:16 AM   #15
keefaz
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Maybe set LC_TIME also just in case
Code:
dow=$(LC_TIME=c /bin/date "+%a")
 
  


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