07-23-2008
Adding header to an existing file
Dear All,
I need to add a header of one line to an already existing file.
I know that it can be achieved by the following:
echo "Header" > newfile
cat file1 >> newfile
But my problem is that file is huge and there is no space for creating a new file every time. Is there a way that I can add header without creating a new file?
Thanks
Shash
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
not required this time (36 Replies)
Discussion started by: Sandeep_Malik
36 Replies
2. Shell Programming and Scripting
Hi Friends,
I want to know the command to add a new file in a existing tar file.
For Ex:
I have a tar file file1.tar with the contents
one.txt
two.txt
three.txt
Now I need to add file four.txt to this existing tar file, how can I do it?
Thanks in advance (4 Replies)
Discussion started by: mr_manii
4 Replies
3. UNIX for Dummies Questions & Answers
Hello,
I’m trying to add a row that will server as the header for a space separated file.
1-I have a number of files save in a directory
2- grep text path/*.log > newfile
newfile looks like this
Field1 Field2 Field3 Field4
Field1 Field2 Field3 Field4
Field1 Field2 Field3 Field4
Field1... (2 Replies)
Discussion started by: rene reivera jr
2 Replies
4. Shell Programming and Scripting
Hi All ,
Kindly help me with this soln
awk '{printf "%s %7s \n", $1,$c}' infile
where
value of variable c I am externally giving input
But executing the above command shows all the columns of infile where as I want only 1st column of infile and 2nd column should print value c (8 Replies)
Discussion started by: Pratik4891
8 Replies
5. Shell Programming and Scripting
I have a file with 50,000 records in it, i have a requirement to use the same 50,000 records and add them 4 times to the same file to make a total of 200,000 records. I was wondering how to do this using ksh. Any help is greatly appreciated. (2 Replies)
Discussion started by: vpv0002
2 Replies
6. Shell Programming and Scripting
How can we a shell script and pass date parameters .I have 3 files comming from Datastage with |" delimited
I need append 3 files as above: File1:
P0000|"47416954|"AU|"000|"INS|"0000|"|"20060601|"99991231|"|"|"|"|"01
File 2:... (2 Replies)
Discussion started by: e1994264
2 Replies
7. UNIX for Dummies Questions & Answers
Hi,
I want to add the below Header to all the files in sequence File1,File2,File3...etc
"ABC,<number of chracter in the file>"
e,g - If File1 is as below
pqrstuvdt
abcdefgh
then I want to add the above header into it ,So that File1 becomes as below
ABC,17
pqrstuvdt
abcdefgh
... (9 Replies)
Discussion started by: spari2
9 Replies
8. Shell Programming and Scripting
Hi team,
In my script i am storing some value in a variable "header".
I want to add the header value has header in a file.
Please help me on this
Thanks in advance,
Baski (4 Replies)
Discussion started by: baskivs
4 Replies
9. Shell Programming and Scripting
Hi All ,
I have a pipe dilimited file .Sample file is below.I need to add header in that file through unix.
000001| 1|AQWWW|234,456.00 | | 123456| |41|abC| 0|xyZ|
000002| 2|11 4|1,234,456.99| | 0| |23| |99|! |
000003| 3|!!@#$|0,000,001.10| | ... (4 Replies)
Discussion started by: STCET22
4 Replies
10. Shell Programming and Scripting
Hello
I am facing a very unique problem and not able to understand why. I have written a function which will check header of the file. If header is present good else it will write the header on top
def writeHeaderOutputCSV(fileName):
# See if the file exist already
try:
... (0 Replies)
Discussion started by: radioactive9
0 Replies
LEARN ABOUT OPENSOLARIS
diffmk
diffmk(1) User Commands diffmk(1)
NAME
diffmk - mark differences between versions of a troff input file
SYNOPSIS
diffmk oldfile newfile markedfile
DESCRIPTION
diffmk compares two versions of a file and creates a third version that includes "change mark" (.mc) commands for nroff(1) and troff(1).
oldfile and newfile are the old and new versions of the file. diffmk generates markedfile, which, contains the text from newfile with
troff(1) "change mark" requests (.mc) inserted where newfile differs from oldfile. When markedfile is formatted, changed or inserted text
is shown by | at the right margin of each line. The position of deleted text is shown by a single *.
USAGE
See largefile(5) for the description of the behavior of diffmk when encountering files greater than or equal to 2 Gbyte ( 2^31 bytes).
EXAMPLES
Example 1 An example of the diffmk command.
diffmk can also be used in conjunction with the proper troff requests to produce program listings with marked changes. In the following
command line:
example% diffmk old.c new.c marked.c ; nroff reqs marked.c | pr
the file reqs contains the following troff requests:
.pl 1
.ll 77
.nf
.eo
.nh
which eliminate page breaks, adjust the line length, set no-fill mode, ignore escape characters, and turn off hyphenation, respectively.
If the characters | and * are inappropriate, you might run markedfile through sed(1) to globally change them.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWdoc |
+-----------------------------+-----------------------------+
SEE ALSO
diff(1), nroff(1), sed(1), troff(1), attributes(5), largefile(5)
BUGS
Aesthetic considerations may dictate manual adjustment of some output. File differences involving only formatting requests may produce
undesirable output, that is, replacing .sp by .sp 2 will produce a "change mark" on the preceding or following line of output.
SunOS 5.11 14 Sep 1992 diffmk(1)