HOw can I use any variable in sed command.
For example I am using 'sed -e 's/?/$ORACLE_HOME/g' $file_name
Here it replaces ? with $ORACLE_HOME. Instead of it I need actual value of $ORACLE_HOME. How can I do that?
Please advice.
Thanks in advance.
Malay (13 Replies)
Hi,
My shell script searches a VALUE in a file, copies it to a variable and updates a line in another file with this new VALUE (replacing the old)
The value has a pattern-
VALUE=`$$MyDate=11-11-2008 09.09.56.123456`
(yes the $ - . = and space are all part of the string)
I am having... (6 Replies)
Hello,
i have another sed question.. I'm trying to do variable substition with sed and i'm running into a problem.
my var1 is a string constructed like this:
filename1 filerev1 filepath1
my var2 is another string constructed like this:
filename2 filerev2 filepath2
when i do... (2 Replies)
i need to use a value in the Variable to print a particular line from a file using sed command.
i tried the below one but its is not working
sed -n ' "$var"p ' abc.txt
but its is not working please help me to sort out this. (3 Replies)
I want to instert Category:XXXXX into the 2. line
something like this should work, but I have somewhere the wrong sytanx. something with the linebreak goes wrong:
sed "2i\\${n}Category:$cat\n"
Sample:
Titel Blahh Blahh abllk sdhsd sjdhf
Blahh Blah Blahh
Blahh
Should look like... (2 Replies)
I'm trying to make a sed substitution where the substitution pattern is an environment variable to be expanded, but the variable contains a "slash".
sed -e 's/<HOME_DIRECTORY>/'$HOME'/'This gives me the following error:
sed: -e expression #1, char 21: unknown option to `s'Obviously this is... (2 Replies)
Hi Friends
in sed whether we can use variable.like the following expression.
sed -i 's/ABC/$var/g' filename
I am using Kernel 2.6.18-194.11.1.el5 RedHat linux.
I have tried sed -i 's/ABC/"$var"/g' filename, still not working.:(
Please help.
Thanks in advance
Joy (2 Replies)
Hello
i would like to interpret a variable in this command
cnt=3
sed -n '${cnt}p' file.txt
sed: 0602-403 `${cnt}`p is not a recognized function.
can you help me please ?
thanks (2 Replies)
Hi all,
Hereby wish to have your advise for below:
Main concept is
I intend to get current directory of my script file.
This script file will be copied to /etc/init.d.
A string in this copy will be replaced with current directory value.
Below is original script file:
... (6 Replies)
version=git
release=r8
echo lp-testsuite-git-r8.x86_64.rpm |sed -e "s/-$version-$release.*//g"
I want to get
lp-testsuite
what's wrong with me ? (1 Reply)
Discussion started by: yanglei_fage
1 Replies
LEARN ABOUT BSD
hostname
HOSTNAME(7) Miscellaneous Information Manual HOSTNAME(7)NAME
hostname - host name resolution description
DESCRIPTION
Hostnames are domains, where a domain is a hierarchical, dot-separated list of subdomains; for example, the machine monet, in the Berkeley
subdomain of the EDU subdomain of the ARPANET would be represented as
monet.Berkeley.EDU
(with no trailing dot).
Hostnames are often used with network client and server programs, which must generally translate the name to an address for use. (This
function is generally performed by the library routine gethostbyname(3).) Hostnames are resolved by the internet name resolver in the fol-
lowing fashion.
If the name consists of a single component, i.e. contains no dot, and if the environment variable ``HOSTALIASES'' is set to the name of a
file, that file is searched for an string matching the input hostname. The file should consist of lines made up of two white-space sepa-
rated strings, the first of which is the hostname alias, and the second of which is the complete hostname to be substituted for that alias.
If a case-sensitive match is found between the hostname to be resolved and the first field of a line in the file, the substituted name is
looked up with no further processing.
If the input name ends with a trailing dot, the trailing dot is removed, and the remaining name is looked up with no further processing.
If the input name does not end with a trailing dot, it is looked up in the local domain and its parent domains until either a match is
found or fewer than 2 components of the local domain remain. For example, in the domain CS.Berkeley.EDU, the name lithium.CChem will be
checked first as lithium.CChem.CS.Berkeley.EDU and then as lithium.CChem.Berkeley.EDU. Lithium.CChem.EDU will not be tried, as the there
is only one component remaining from the local domain.
SEE ALSO gethostbyname(3), resolver(5), mailaddr(7), named(8), RFC883
4.2 Berkeley Distribution November 21, 1987 HOSTNAME(7)