Is there a suitable date/time as part of the data? If it is YYYYMMDDHHMMSS format, then you can:-
Of course, if you repeat this, you will start getting duplicate data in A2.txt unless A1.txt & A3.txt are cleared down.
Of course, you need to be sure that no new data is being written to them between when you read them and when you clear them. Perhaps this would help, but add some error checking:-
All,
I've basic knowlege on understanding UNIX Shell Programming. Right now I need to write a script for the following requirement. Kindly help me or suggest me how to write a Shell script.
I've 8 .csv files that are containing "Detail" records. Each file getting more than 1 million. Another... (3 Replies)
Hi,
I have a pointer file ptr.txt.
There may be any number of files mentioned in the ptr.txt file
eg: cat ptr.txt
/home/abc.txt
/home/pqr.txt
/home/xyz.txt
I have to read this pointer file and merge the files given in the pointer file
so that final file say... (1 Reply)
Well the title is not too good, so I will explain.
I need to move (rename) files using a simple AIX script.
???file1.txt
???file2.txt
???file1a.txt
???file2a.txt
to be:
???renamedfile1'date'.txt
???renamedfile2'date'.txt
???renamedfile1a'date'.txt
???renamedfile2a'date'.txt
... (4 Replies)
Hi, guys. I have one question:
I have two files: passwd and shadow (the number of records in these files are not equal)the contents of them are below:
passwd:
**************
ftp:x:24:24:
sshd:x:71:65:
uucp:x:10:14:
brownj:x:5005:1000:
sherrys: x :5006:1000:
...
*************
... (2 Replies)
Hi, I have a question that I cannot solve.
if I have a file like this (lets say "x-values.dat"):
x1
x2
x3
another file like this (lets say "y-values.dat"):
y1
y2
y3
y4
and another file like this (lets say "p-values.dat"):
p1
p2
p3
...
p12
How can I get this output?
x1 y1 p1
x1 y2... (16 Replies)
Hi guys,
I have a question which might be easy to answer but I don't how to do it.
The thing is I need to make a program in C which creates a file with all the content from the files in \etc.
I'm not new to C language but to UNIX.
I've read somewhere I need to use functions like f_read... (2 Replies)
Hello everyone!!
I am not completely new to shell script but I havent been able to find the answer to my problem and I'm sure there are some smart brains here up for the challenge :D.
I have several CSV files that I need to combine into one, but I also need to know where each row came from.... (7 Replies)
Hi, I need help with merging two files. My requirement is as below:
File 1:
MachineA
MachineB
File 2:
Process1
Process2
Desired File:
MachineA Process1
MachineB Process2
If file 2 contains only one entry Process1, then second line in the desired output should be:
MachineA Process1... (1 Reply)
:EDIT:
I think my post name should have been labeled: how to copy files and record original file location. not "retain".
Hello, this is my first post! I searched the forums a lot before posting, but was unable to answer my question.
Here's my problem:
There are several hundred text files... (4 Replies)
Hi All,
i have a requirement as below.
There are two files.
In 1st file a.txt i have four lines as below
Ramesh
Suresh
Pradeep
Franklin
In 2nd file b.txt i have 5 lines as below
Francis
Elizabeth
David
John
Ravi
The output file suppose c.txt should contain 1st line of... (5 Replies)
Discussion started by: sureshk_85
5 Replies
LEARN ABOUT DEBIAN
h5jam
h5jam(1) General Commands Manual h5jam(1)NAME
h5jam - Add a user block to a HDF5 file
SYNOPSIS
h5jam -u user_block -i in_file.h5 [-o out_file.h5] [--clobber]
DESCRIPTION
h5jam concatenates a user_block file and an HDF5 file to create an HDF5 file with a user block. The user block can be either binary or
text. The output file is padded so that the HDF5 header begins on byte 512, 1024, etc.. (See the HDF5 File Format.)
If out_file.h5 is given, a new file is created with the user_block followed by the contents of in_file.h5. In this case, infile.h5 is
unchanged.
If out_file.h5 is not specified, the user_block is added to in_file.h5.
If in_file.h5 already has a user block, the contents of user_block will be added to the end of the existing user block, and the file
shifted to the next boundary. If --clobber is set, any existing user block will be overwritten.
EXAMPLE USAGE
Create new file, newfile.h5, with the text in file mytext.txt as the user block for the HDF5 file file.h5.
h5jam -u mytext.txt -i file.h5 -o newfile.h5
Add text in file mytext.txt to front of HDF5 dataset, file.h5.
h5jam -u mytext.txt -i file.h5
Overwrite the user block (if any) in file.h5 with the contents of mytext.txt.
h5jam -u mytext.txt -i file.h5 --clobber
RETURN VALUE
h5jam returns the size of the output file, or -1 if an error occurs.
CAVEATS
This tool copies all the data (sequentially) in the file(s) to new offsets. For a large file, this copy will take a long time.
The most efficient way to create a user block is to create the file with a user block (see H5Pset_user_block), and write the user block
data into that space from a program.
The user block is completely opaque to the HDF5 library and to the h5jam and h5unjam tools. The user block is simply read or written as a
string of bytes, which could be text or any kind of binary data. It is up to the user to know what the contents of the user block means
and how to process it.
When the user block is extracted, all the data is written to the output, including any padding or unwritten data.
This tool moves the HDF5 file through byte copies, i.e., it does not read or interpret the HDF5 objects.
SEE ALSO h5dump(1), h5ls(1), h5diff(1), h5import(1), gif2h5(1), h52gif(1), h5perf(1), h5unjam(1).
h5jam(1)