's:test1.com:New website is test1.com:g' will not give desired results, as you want to replace test.com with "New website is test1.com" whereas sed will be searcing for "test1.com" which doesn't exist
You are correct, it will not give desired results, and your sed suggestion is correct. However, in the code posted by digitalviking, test1.com will exist. The first expression will change www.test.com leaving www.test1.com which the second expression will find and (incorrectly) change.
After the first expression, the record would have been:
EDIT: Did I really miss something? I thought there was a previous post indicating that the output wasn't going to the file. I'll leave this, but out of context (and of course I didn't hit 'quote') it seems I am just rambling. Odd.
Sed writes to standard output. You can use the -i option (if supported by your version of sed) which edits the file in place. (I recommend using the backup feature of the -i option if you go with this. If your sed doesn't support -i, or you want your script to be portable to systems that don't, then you'll need to do something like this:
Code:
mv input-file input-file.old
if sed '----your sed programme' input-file.old >input-file
then
rm input-file.old
else
mv input-file.old input-file
fi
Which copies your original file to the old copy and runs the sed on that putting the output into the file with the same name. If the sed is successful, the old file is removed. If the sed fails, the original file is restored.
You probably should also test to ensure that the initial move worked before running the sed.
Hello is it possible with awk or sed to replace any white space with the previous line characters in the same position?
I am asking this because the file I have doesn't always follow a pattern.
For example the file I have is the result of a command to obtain windows ACLs:
icacls C:\ /t... (5 Replies)
Dear Unix Forums,
I am hoping you can help me with a pattern matching problem.
What am I trying to do?
I want to replace multiple lines of a text file (that match a multi-line pattern) with a single line of text. These patterns can span several lines and do not always have the same number of... (10 Replies)
Hi all,
I need to replace a line
export TZ=xxxxxxxx
with the line
export TZ=$1
Now, "xxxxxxxx" in the above line is some unknown string and $1 is a parameter. I want the content of $1 to be replaced with "xxxxxxxx".
Kindly help me how to do this in the shell scripting. (5 Replies)
Hi All,
As mentioned in the title I have two text files and I would like to replace line number 5 of file #1 with line number 4 of file #2
e.g.
file 1
wqwert
4.4464002
3
319
286
369
46.320002
56.150002
45.100002
1
1
1
0.723 (12 Replies)
Hi,
I'm attempting to rename some files that have spaces in them. Without linking sed commands together is it possible to replace the first three "." to " ".
File.name.is.long.ext -> File name is long.ext
I can get the desired effect with
echo "File.name.is.long.ext" | sed 's/\./ /g;s/... (5 Replies)
Hi all,
assume that i am having the following line in a file called file1.
triumph and disaster must be treated same.
I want to replace this line with.
follow excellence success will chase you.
is it possible to do this using sed. if possible kindly post me the... (2 Replies)
We have 2 file XML files - FILE1.XML and FILE2.xml - we need copy the contents of FILE1.XML and replace in FILE2.xml pattern "<assignedAttributeList></assignedAttributeList>"
FILE1.XML
1. <itemList>
2. <item type="Manufactured">
3. <resourceCode>431048</resourceCode>
4. ... (0 Replies)
hi,
when i am doing the following things getting error
Can anyone please suggest
i have a file where there is a line like the following
branch=dev sdf dev jin kilii fin kale boyle dev james dev
i want to search the existance of dev in the above line.
cat "$file" | sed -n... (8 Replies)
I have a problem in the following code ...
while read line
do
#Get Line Number
OLDLINE=`sed -n $Lineno $filename`
echo "Un Changed Line : "$OLDLINE
echo "Enter a New Pattern : "
read NewPattern <&1
echo "NewPattern :"$NewPattern
NEWLINE=`cat $filename | sed -n... (1 Reply)
I am needing to replace a whole line of code in a file with a new line of code. This is what I need to do.
I need to replace.
$db_url = 'mysql://test_dev:test12@localhost/test';
With
$db_url = 'mysql://$dbuser:$dbpass@localhost/$dbase';
OK this is where it gets complicated. The... (4 Replies)
