I have a tab delimited file. I need to replace the 7th tab with a new line.
I tried the following command (but it does not work):
The above simply spits out the original file.
If I write the next command, it replaces the first tab in each line with a newline. How can I make it replace the 7th tab in each line?
I have several (vhdl) files containing a pattern with newline characters that I need to replace by another pattern that also contains newline characters.
I start with something like:
Code:
I want to replace it by something like:
Code:
(I need to paste some lines)
As I need to do this (very) often I want to use a shell script.
I tried:
1.
Code:
result:
Code:
2.
Code:
result:
File remains unchanged
3.
Code:
result:
Code:
4.
Code:
result:
Displays the unchanged testfile
How I can automate the pattern replacement?
Code:
I've been playing around with sed but can't find a way to remove the <br> html tag and replace it with a newline. Sed isn't truly needed awk or other suggestions could be good.
View 3 Replies View RelatedI am trying following script can I do this or is there a way to do find and replace the replacing word is dynamic input by user
echo -n "Enter name:"
read RP_USER
sed 's/text1/$RP_USER/' /home/user/file1 > /home/user/file2
I used a command Code:
grep -r err_sys ./
its output is
Code:
./tcpclitime.c:err_sys("socket error");
./tcpclitime.c:err_sys("connect error");
./tcpclitime.c:err_sys("write error");
./tcpclitime.c:err_sys("shutdown error");
./tcpclitime.c:err_sys("read error, n = %d", n);
[Code].....
Is it possible some how to replace all the occurrences of word err_sys by printf.
Here's the actual line of code, which exists in a bash script:
Code:
I want to replace instances like this:
Code:
with this:
Code:
Using this:
Code:
Which works great when there's only ONE of the pattern on the line. But in a case like the "actual line" I posted first, where there are two patterns, separated by a slash, only ONE gets replaced
Watch:
Code:
Why? There must be (among many other things) something I'm not knowing about sed, that's causing this.
-- I'm currently using the ~ (tilde) as the separator in the sed command. It doesn't matter, I've used / ~ and % with no difference.
-- As a test, I tried putting a different character(s) in the middle of the original pattern instead of the / but that made no difference.
-- I've come up with various similar but slightly different regexs that will do this replacement, but they all have had this same result.
-- I tried the sed single-quoted, double-quoted, and unquoted; the latter fails to execute, and the formers both work as described here: wrong.
I wanted to find and replace a string from a perl file. I have written a script in bash which runs the following command.
perl -pi -e "s/$findstring/$replacestring/" testfile
where as $findstring = print F_WC_TMP"$line
";
and $replaceString = $line = join ' ', split ' ', $line; print F_WC_TMP"$line
";
But when I am running the above command, i think it is replacing the $findstring with the above mentioned string and hence it contains a $line, it is looking for the variable $line and not finding the exact string. I am confused about how to search for a string that contains $ in it and replace it with another $string.
I'm writing a script to replace some text that exists in about 50 .lex, .y, and .cc source code files, sometimes more than once in a file. Sometimes the text is in a multiline C comment, and other times it's within a multiline C string.
I use sed to grab the start and end of each line and wrap the new text in the old whitespace and/or quotes and Problem is, sed is changing the characters into a newline.
Is there a way to tell sed to not process escape sequences? I tried using several variations of
Code:
To no avail. Or could it be bash?
I would give up on the script and do it by hand, but this is something that I must do from time to time.
Here's the function which replaces the first occurrence found:
Code:
When $post is printed by echo, it shows the - but by the time the file is on disk, it becomes a newline. What should I do to ensure that it stays as the characters ?
I want to create an alias or function that when used prints something like this on the command line so I can further modify it before pressing enter myself.
Code:
$ FILE=exercise1; cc -o $FILE $FILE.c && ./$FILE; FILE=
The idea is that I'm studying c and want to change the name of the file once instead of
[code]....
I need to replace part of a line in a file with multiple lines, however need to separate each line with a newline is this possible?
Example, need to remove line 2
And insert line similar to below:
If the multiple lines were part of a text file, would inserting a text file automatically include newline characters?
I can't get x to work with a mouse so I have to use a windows computer to do that from for now. The problem is I remember there being something about windows using a newline AND carriage return and linux just using a newline. I was about to cut and paste code but the lines go on and on instead of breaking off where they did in linux. I was going to write a perl script but don't know how to add a carriage return to the end of each line.
View 3 Replies View RelatedUsing xsel I pass a selection into a variable. I then check that the variable includes an embedded newline to be sure that the selection returned by xsel is complete. If the selection content preceding the newline is just a single word, the check fails to detect the newline, thus
Code:
g fnm=`xsel`
g cat <<< "$fnm"
Whatis
apropos sear
[code]....
I'm having a hard time figuring out why the program posted below prints an extra newline every time I type the enter key.This program is using the master pseudo-terminal to send the password and receive the output from the slave(connected to the passwd program).I suspect this has to do with the terminal line discipline(s)(2 considering the master and slave), but I can't really understand why.I have tried turning on/off several terminal special characters but to no avail.
Source code follows(compiled in x86, Slackware-13.0 - linux-2.6.31.5 - gcc 4.3.3):
Code:
How do I write a regexp that matches a string that begins with whitespace or contains a newline, but not necessarily both?
View 2 Replies View RelatedI found this command that works great finding and replacing a simple string to another in files located in that folder and all sub-folders.
Code: find . -name '*.php' | xargs perl -pi -e 's/OldText/NewText/g'
The problem I have is that I need to replace a more complex string, like this: Old string: /mnt/stor6-wc2-dfw1/627896/982574/ New string: /mnt/stor8-wc2-dfw1/369587/302589/ There I don't know how to do it... since the / is what separates the old from the new strings, and the strings that I want to replace have / in it. Also, I would like to know how to specify under what folder replace the files, for example, I want that it search/replaces all files under /var/www/mysite/htdocs folder.
Is there any command in Linux which will find a particular word in all the files in a given directory and the folders below and replace it with a new word?
View 4 Replies View RelatedI'm struggling with the Vim find/replace command using wildcards.
I have several, big html files with lots of instances of: <p stuffiwanttoremove>
I've been trying the Vim command: %s/<p *>/<p>/ge
but it doesn't seem to work.
Does anybody know what I'm doing wrong?
I realise there may be alternatives to this (eg a bash script)
how to use a variable in a sed command, but I can't get the output into a variable.
FILE=readme.txt
now i want to remove the extension of filename
so file woud be:
FILE=readme
my script:
NFILE=`echo $FILE | sed 's/.txt//'`
mv ../out/$FILE ../out/$NFILE
FILE=$NFILE
now when i run my script. i get this unknown character extensions in my new file(NFILE).
For example, I always go to this path:
/user/something/somefolders/somewhere
but I don't want to type
cd
/user/something/somefolders/somewhere
in the terminal all the time, can I have some short hand to do so? for example, can I do something like
cd commandPlace
to replace the path?
I have a jar, and I need to replace a class in it, at this moment, I can only open it with "archive manager" and then drag and drop the new compiled class into the jar, but I think this is really boring, if I can do with with just a command ?
View 1 Replies View RelatedAlmost by mistake, I figured out you could do something like:
$ cp foo.data bar1.data
$ ^bar1^bar2
And that runs the same command with bar2.data instead of bar1.data. Now, how about if I have multiple occurrences of the target word? For example:
$ cp foo.data bar.data
$ ^data^index
It only replaces the first data extension. How do I get it to replace both?
I have an SQL dump, file.sql that has many references to a particular domain, d1.com. I would like to run a command that can replace every occurrence of d1.com with d2.com. I've tried looking into sed before but the man pages are quite daunting.
View 14 Replies View RelatedI have one perl sctipt which generate cfg file with ^M in all the EOL. I need to remove the ^M from the cfg file. How can i remove that from the perl script itself. I have tried the following unix command in perl script,
system("perl -pi -e 's/^M//g' *.cfg");
It doesn't work.
I have a js string bounded by single quotes (''). That requires that I escape the single quote (') that occurs in "I'm" or "don't". I want "I'm" to become "I'm". Fair enough. But this doesn't work: sed -e "s/'/'/g" The replacement string is unescapable I believe and must be a literal. How do I do this in sed ?
View 2 Replies View RelatedI'm having problems with Tomboy. I have a few hundred note files and I need to go through all of them and replace all instances of "<link:broken>a</link:broken>" with "a". Is there a bash command I can use to do this?
View 2 Replies View RelatedI want to know the Perl command to replace a string by pointing the line number. I know how to replace a string without pointing a line number but I am in need to replace only the two matching string in a file
View 6 Replies View RelatedIf I have a line like AA=<value> in the file, and the <value> is not a constant. For example, it could be AA=BB or AA=CC. How can I replace the <value> with a specified string such as 'DD'? Thus, AA=BB can become AA=DD and AA=CC can also become DD. Don't want the whole line replaced, just the <value> part.
Can sed or awk work for this?
I want to change the parameter for ThreadLimit for one file as shown below using sed. I want to ignore the commented line. But the command I am using also executing with commented line.
# ThreadLimit: maximum setting of ThreadsPerChild
ThreadLimit 25
I want the desired output as
# ThreadLimit: maximum setting of ThreadsPerChild
#ThreadLimit 25
ThreadLimit 50
For this I am using command.
sed '/ThreadLimit/{;h;s/^/#/p;x;s/ .*/ 50/;}' test.txt.1 > test.txt
I am trying to replace a section of a file between the first instances of the strings {}, with the contents of another file. Example of the format of the file I'm trying to modify
Code:
Servername=something.com
hosts {
macaddress1
macaddress2
[code].....
Then captured all the "macaddress#"s to a variable and used sed to swap
sed "s/$CURRENTDATA/$NEWDATA/" filename
However I get 1 of 2 errors,
Using a small number of macs in "$NEWDATA"
sed: command garbled: s/ macaddresshere
Or when using a large number of macs in the $NEWDATA variable get
bash: /usr/bin/sed: Arg list too long.
how to replace a large block of txt in one file with another large block from another?
I have a file, "outfile" what I wish to insert into a file called template where it finds "OVERRIDES". I am getting an error.
Code:
However I can do something like this and it works fine
Code:
I am guessing its because of the file size or multiple lines.
A sample of the outfile text is below
Code: