Hi,
I have to insert a line having variables using sed. But the variables are not getting substituted within sed.
Ex:
This works. But the below code does not work.
The above code inserts '$line' in the 2nd line of the file; instead I need to insert the value of $line, which is 'hello'
I even tried double quotes but it does not work.
Please help.
Last edited by pludi; 04-01-2010 at 06:39 AM..
Reason: code tags, please...
Hi I'm new to sed, and need to add characters into a specific location of a file, the fileds are tab seperated.
text <tab> <tab> text <tab> text EOL
I need to add more characters to the line to look like this:
text <tab> <tab> newtext <tab> text <tab> text EOL
Any ideas? (2 Replies)
sed '1r file.txt' <source.txt >desti.txt
This example will insert 'file.txt' between line 1 and 2 of source.txt.
sed '0r file.txt' <source.txt >desti.txt
gives an error message.
Does anyone know how 'sed' can insert 'file.txt' before the first line of source.txt? (18 Replies)
Just posted on another fellow's question using ed, but I wanted to know about doing it with sed on Unix. For example - I have a file of an unknown length, but I want to add a line after the shell declaration (Line 2). If possible, I'd like the example to be able to just substitute in a number and... (2 Replies)
Hi all,
I have a file called "text.cpp" with the first line of "1"
afterwards I tried in Ubuntu to type the following
sed '12iasdasdasdasdsad' test.cpp > output.txt
however when I tried to see the result of output.txt
#cat output.txt
1
why is the line 12 is not updated to the... (6 Replies)
Hello.
I have a config file (/etc/my_config_file) which may content :
#
# port for HTTP (descriptions, SOAP, media transfer) traffic
port=8200
# network interfaces to serve, comma delimited
network_interface=eth0
# set this to the directory you want scanned.
# * if have multiple... (6 Replies)
Thanks to help from Don Cragun in post 302924174, I'm off and getting into trouble on my own (finally) with sed.
Here is my goal - insert \\r\n at the 60th character on each line and then every 76th character thereafter:
Input:... (3 Replies)
Hi
I am trying to run a sed command within a script..unfortunately it wasn't written on Solaris so doesn't work. Can anyone help with the correct coding please?
It is:
sed -i '1i ROWID;ORDER_ID;JOB_NAME;ORDER_TABLE' ${OUTFILE} (4 Replies)
Hi,
$ cat f1
My name is Bruce and my surname is
I want to use SED to find “Bruce” and then append “ Lee” to the end of the line in which “Bruce” is found
Then a more tricky one…. I want to INSERT ….a string… in to a line in which I find sometihng. So example
$ cat f2
My name is... (9 Replies)
Discussion started by: Imre
9 Replies
LEARN ABOUT DEBIAN
subst
SUBST(1) General Commands Manual SUBST(1)NAME
subst - substitute definitions into file(s)
SYNOPSIS
subst [ -e editor ] -f substitutions victim ...
DESCRIPTION
Subst makes substitutions into files, in a way that is suitable for customizing software to local conditions. Each victim file is altered
according to the contents of the substitutions file.
The substitutions file contains one line per substitution. A line consists of two fields separated by one or more tabs. The first field
is the name of the substitution, the second is the value. Neither should contain the character `#', and use of text-editor metacharacters
like `&' and `' is also unwise; the name in particular is best restricted to be alphanumeric. A line starting with `#' is a comment and
is ignored.
In the victims, each line on which a substitution is to be made (a target line) must be preceded by a prototype line. The prototype line
should be delimited in such a way that it will be taken as a comment by whatever program processes the file later. The prototype line must
contain a ``prototype'' of the target line bracketed by `=()<' and `>()='; everything else on the prototype line is ignored. Subst
extracts the prototype, changes all instances of substitution names bracketed by `@<' and `>@' to their values, and then replaces the tar-
get line with the result.
OPTIONS -e Substitutions are done using the sed(1) editor, which must be found in either the /bin or /usr/bin directories. To specify a dif-
ferent executable, use the ``-e'' flag.
EXAMPLE
If the substitutions file is
FIRST 111
SECOND 222
and the victim file is
x = 2;
/* =()<y = @<FIRST>@ + @<SECOND>@;>()= */
y = 88 + 99;
z = 5;
then ``subst -f substitutions victim'' changes victim to:
x = 2;
/* =()<y = @<FIRST>@ + @<SECOND>@;>()= */
y = 111 + 222;
z = 5;
FILES
victimdir/substtmp.new new version being built
victimdir/substtmp.old old version during renaming
SEE ALSO sed(1)DIAGNOSTICS
Complains and halts if it is unable to create its temporary files or if they already exist.
HISTORY
Written at U of Toronto by Henry Spencer.
Rich $alz added the ``-e'' flag July, 1991.
BUGS
When creating a file to be substed, it's easy to forget to insert a dummy target line after a prototype line; if you forget, subst ends up
deleting whichever line did in fact follow the prototype line.
25 Feb 1990 SUBST(1)