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I know the hostname of the m/c which is in the network...
whats d command to know the ip address associated with the hostname.

i din get bolded part in the command...

file1 |sed -n "s/^\(.*\):HOST=.*/\1/p"

some one pls tell...what this command does
grep pattern file1 |sed -n "s/^\(.*\):HOST=.*/\1/p"

I have the following line in file1

elif [ "$1" = "start" ] ; then


now if i try to grep this using following command
grep -e "elif [ "$1" = "start" ] ; then" file1
it is...

can u please tell anbu wat does this code do...
i din get the logic...
many thanx in advance

i hav file1
with contents:

welcome
this is first file
file name is file 1
last line of the file

now i want to check if the second line has sentence "this is first file" through
"if"...

ok this is fine..thanx alot..

in the soluton u gave u mentioned the line number in the target file..
but In the target file how to insert between two particular patterns with out giving the line number

thanx for the quick reply here is the scenario i'm writing
i don want to insert entire contents of file but a portion or few lines from the source file to target file..
how to do this

I have a situation where in a few lines have to be added into a script at some particular location.
It is to be done from a file in another location just by running this file we should move the...

if i give dir=/tmp/${0##*/}
what would b the value stored in dir ..i'm more concerned about the 0##*/ part..

whats the value stored in $$