nixCraft

sparky · #1 (**permalink**) 04-01-2006, 08:02 PM

I am making my server script big and better but once again i have run into trouble with what i thought would be the simplest parts of the script.
I want delete one line from a text file and replace it with new.
ie
delete password"*" from text file and add new password"$"
from what i have read the command > deletes all and adds new
and >> just adds new line to rest .
using google i have seems some thing on sed and awk so i assume i need to use one of them by maybe making a new file then appending then rename back to old but not quite sure how
Have tried this
sed -e 's/rcon_password "*"/rcon_password "foo"/g' server.cfg > server1.cfg

but the out is this
rcon_password "foo"origanpass"
so the wild card is not getting rid of old pass
any help would be great

Thanks

tom · #2 (**permalink**) 04-01-2006, 10:44 PM

I think you want to do find and replace then use replace command:

Code:

replace "OLDTEXT" "NEWTEXT" <INPUT-FILE >OUTPUT-FILE

See more usage at
http://www.cyberciti.biz/nixcraft/vi...ng-in-many.php

sparky · #3 (**permalink**) 04-01-2006, 11:55 PM

tried that but i get
-bash: replace: command not found
I checked out you link and the peal looked good so i tried that and it works same as sed
The problem i am having it that i dont no the password with out opening the text file
ie.. somewhere in the text file is the line password"foo"
so i need to replace password "*" with password "newpass"
but the wild card does not seem to work it keeps old pass and adds new one as well.
password "foo""newpass"

thanks for any help

rockdalinux · #4 (**permalink**) 04-02-2006, 08:49 AM

Can you post your sample text/data file, highlighting password entry?

sparky · #5 (**permalink**) 04-02-2006, 04:30 PM

what it is i am helping a friend run a counterstrike source dedicated servers
He ne not very comfortable using ssh so thought even though i am new to linux myself i would write so scripts to make the job easy the first on my last post mean't he could turn on any servers just be answering a few questions
this script will hopefully change to rcon password for each server

Code:

// server name
hostname "mtservers" 

rcon_password "foo"

// Server password
sv_password "edmatch" 

// server cvars
log 0
mp_friendlyfire 1 
mp_footsteps 1 
mp_autoteambalance 0 
mp_autokick 0 
mp_flashlight 0

i have tried

Code:

sed -e 's/rcon_password "*"/rcon_password "bar"/g' server.cfg > server1.cfg

and i get this

Code:

// server name
hostname "mtservers" 

rcon_password "bar"foo"

// Server password
sv_password "edmatch" 

// server cvars
log 0
mp_friendlyfire 1 
mp_footsteps 1 
mp_autoteambalance 0 
mp_autokick 0 
mp_flashlight 0

i.ve tried

Code:

 perl -p -i -e 's/rcon_password "*"/rcon_password "bar"/g' server.cfg

output

Code:

// server name
hostname "mtservers" 

rcon_password "bar"foo"

// Server password
sv_password "edmatch" 

// server cvars
log 0
mp_friendlyfire 1 
mp_footsteps 1 
mp_autoteambalance 0 
mp_autokick 0 
mp_flashlight 0

so as you can see can t get a wild card to work
From what ive read "" '' `` can cause u hasle may be that where i am going wrong
peal works best as i don t need to make new file and it works fine if i type the old pass but that defeats the object of the script.
Anyway thanks for any help

nixcraft · #6 (**permalink**) 04-02-2006, 08:14 PM

Replace

Code:

sed -e 's/rcon_password "*"/rcon_password "bar"/g' server.cfg > server1.cfg

With

Code:

sed '/rcon_password/s/foo/bar/g' server.cfg >   server1.cfg

How it works?
Above sed will substitute "foo" with "bar" ONLY for lines which contain "rcon_password"

sparky · #7 (**permalink**) 04-02-2006, 08:34 PM

Thanks that also works, But is there a way i can use a wild card with old pass

sparky · #8 (**permalink**) 04-02-2006, 10:12 PM

Thought of work around for old pass but still stuck as now i can t use $ in my code he what ive got so far.

Code:

#dispaly old rcon pass
echo -n "The old " 
 cat server.cfg |grep rcon_pass*
echo
echo
#set oldpass and new pass vars
echo -n "Please enter old pass : "
read oldpass
echo
echo
echo -n "Please enter new pass : "
read newpass
#set pass
#perl -p -i -e 's/$oldpass/$newpass/g' server.cfg
sed '/rcon_password/s/$oldpass/$newpass/g' server.cfg >   server1.cfg

am trying perl commented out and sed peal seems best option if i can get that working as there would be no need to mv server1.cfg to server.cfg
But either would be fine

thanks

sparky · #9 (**permalink**) 04-02-2006, 10:15 PM

Quote:

Originally Posted by sparky

Thought of work around for old pass but still stuck as now i can t use $ in my code he what ive got so far.

Code:

#dispaly old rcon pass
echo -n "The old " 
 cat server.cfg |grep rcon_pass*
echo
echo
#set oldpass and new pass vars
echo -n "Please enter old pass : "
read oldpass
echo
echo
echo -n "Please enter new pass : "
read newpass
#set pass
#perl -p -i -e 's/$oldpass/$newpass/g' server.cfg
sed '/rcon_password/s/$oldpass/$newpass/g' server.cfg >   server1.cfg

am trying perl commented out and sed
peal seems best option if i can get that working as there would be no need to mv server1.cfg to server.cfg
But either would be fine

thanks

tom · #10 (**permalink**) 04-03-2006, 12:18 AM

Quote:

Thanks that also works, But is there a way i can use a wild card with old pass

What do you mean by wild card? If I am not mistaken it means you just want to setup new password without prompting for old password, am I right?

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