05-08-2008
Replacing a word with another in shell programming
Hello everyone,
I am trying to replace a word by another using shell programming.
for that, I can use
sed -i 's/second_word/first_word/' file_name
but for me,the problem is that I don't know one of the words, It is present in a variable that are created dynamically by the script.
for example
I have a line in the file
127.1.1.1 root localhost localcomp
Here root is my hostname
I want to replace the hostname 'root' with a different hostname.
Script will ask the user to provide the hostname and keeps it in a variable '$hostname'
I want to replace this 'root' with '$hostname'
Can anyone help me with this.
Thanx in advance..
--Sunny
Last edited by eamani_sun; 06-12-2008 at 09:48 PM..
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LEARN ABOUT MINIX
ssh-argv0
SSH-ARGV0(1) BSD General Commands Manual SSH-ARGV0(1)
NAME
ssh-argv0 -- replaces the old ssh command-name as hostname handling
SYNOPSIS
hostname | user@hostname [-l login_name] [command]
hostname | user@hostname [-afgknqstvxACNTX1246] [-b bind_address] [-c cipher_spec] [-e escape_char] [-i identity_file] [-l login_name]
[-m mac_spec] [-o option] [-p port] [-F configfile] [-L port:host:hostport] [-R port:host:hostport] [-D port] [command]
DESCRIPTION
ssh-argv0 replaces the old ssh command-name as hostname handling. If you link to this script with a hostname then executing the link is
equivalent to having executed ssh with that hostname as an argument. All other arguments are passed to ssh and will be processed normally.
OPTIONS
See ssh(1).
FILES
See ssh(1).
AUTHORS
OpenSSH is a derivative of the original and free ssh 1.2.12 release by Tatu Ylonen. Aaron Campbell, Bob Beck, Markus Friedl, Niels Provos,
Theo de Raadt and Dug Song removed many bugs, re-added newer features and created OpenSSH. Markus Friedl contributed the support for SSH
protocol versions 1.5 and 2.0. Jonathan Amery wrote this ssh-argv0 script and the associated documentation.
SEE ALSO
ssh(1)
Debian Project September 7, 2001 Debian Project