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Old 09-29-2012, 04:38 AM   #1
muhamed.ahmovic
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Registered: Sep 2012
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Edit file line on remote machine


Hi,

after few days of trying i have decided to ask for help. My problem is following, i am writing script for editing specific line in specific file on remote machine using ssh. Problem is i cant pass double quotes in my variable. To be clear, here is the command i use to edit file:
-before script comes to this line i have exported variable called $w-
sshpass -p 'PASSWORD' ssh root@IP_ADDRESS -o StrictHostKeyChecking=no 'sed -i '12s/.*/few_words="'$w'"/' /path/to/file
Now, everything works fine but i can not get double quotes in remote file. Result should be few_words="variable", what i get is few_words=variable. When i execute this command locally it works ( i get few_words="variable"), but in script it does not.

Thanks in advance...
 
Old 09-29-2012, 10:16 AM   #2
pingu
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A few things to try:
1) Escape the double-quote:
Code:
 sed -i '12s/.*/few_words=\"'$w'\"/' /path/to/file
2) Put the command in a file on remote machine, make it executable and call that file via ssh.

3) Add an extra line substituting "few_words=variable" few_words="variable"
 
Old 09-29-2012, 12:55 PM   #3
muhamed.ahmovic
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[QUOTE=pingu;4792516]A few things to try:
1) Escape the double-quote:
Code:
 sed -i '12s/.*/few_words=\"'$w'\"/' /path/to/file
this does not work

2) Put the command in a file on remote machine, make it executable and call that file via ssh.

yes, this is solution (i have tried it works), but i can't believe it is not possible to send double-quotes in variable via ssh?
i mean extra script just for double-quotes???

Thank you and best regards m8
 
Old 09-29-2012, 02:30 PM   #4
Elv13
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Code:
ssh user@localhost echo '\"asdsd\"'
work fine for me
 
Old 09-29-2012, 03:23 PM   #5
muhamed.ahmovic
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no, it is not working for me...

tnx
 
Old 09-29-2012, 03:25 PM   #6
colucix
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You have to escape the double quotes, but you must protect both the escape character and the double quotes from the local shell. Example:
Code:
ssh user@host "sed -i '12s/.*/few_words=\\\"$w\\\"/' /path/to/file"
Don't worry about the single quotes that embed the sed command, since the w variable is expanded by the local shell and it is its literal value that travels to the remote machine.
 
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Old 09-29-2012, 03:28 PM   #7
muhamed.ahmovic
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yesssss!!!!

Thank you so much colucix, you are my savior!

Respect and best regards m8
 
Old 09-29-2012, 03:28 PM   #8
colucix
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You're welcome!
 
  


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