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Need to change two words in a line using shell script.


 
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# 1  
Old 08-24-2009
Need to change two words in a line using shell script.

Hi,
i have a line
Code:
tftp          dgram   udp      wait    nobody  /usr/sbin/tcpd  in.tftpd  /tftpboott

in /etc/inet.conf file. ineed to replace nobody with root and /tftpboott with /flx/boot. i tried using sed ,but i could not change both of them. can you please help me to do this.


Edit: Next time use [code] and [/code] tags when displaying code, data or logs etc. to enhance readability and preserve formatting like indention etc., ty.

Last edited by zaxxon; 08-24-2009 at 03:55 AM.. Reason: code tags
# 2  
Old 08-24-2009
Code:
sed 's/\/tftpboott/\/flx\/boot/; s/nobody/root/'

# 3  
Old 08-24-2009
This will replace nobody to root in other lines also,but i want to replace nobody to root in those lines containing /tftpboott
# 4  
Old 08-24-2009
That's true. Try this:
Code:
sed '/tftpboott/ { s/\/tftpboott/\/flx\/boot/; s/nobody/root/}' infile

# 5  
Old 08-24-2009
Code:
sed '/nobody.*\/tftpboott$/ { s/\/tftpboott/\/flx\/boot/; s/nobody/root/}' /etc/inet.conf

i think this is more secure
# 6  
Old 08-25-2009
Is it possible to change only the first line which has tftpd leaving other lines which may have tftpd.can u pls share the code snippet and can i pass the pattern to be replaced by a variable?

Last edited by vprasads; 08-25-2009 at 03:43 PM..
# 7  
Old 08-26-2009
Post an your complete example of your input so we don't have to guess around and mark the line you want to have to be changed. Use [code] and [/code] tags when doing so, thank you!

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