10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi
I have a file called text.txt contains
x
y
z
when i run a command i will get output like below
x 20
z 30
i want to insert x, z value in text.txt file and should be like this
x 20
y 0
z 30
can anyone help me please? (1 Reply)
Discussion started by: siva kumar
1 Replies
2. Shell Programming and Scripting
I am familiar with scripting, but I am trying to see if there is an easy way to append files from similar files into one file. For example, if there is file1_20121201, file1_20121202, file1_20121203,
file2_20121201, file2_20121202, file2_20121203
I want to be able to combine all the data from... (3 Replies)
Discussion started by: mrbean1975
3 Replies
3. Shell Programming and Scripting
I have searched the forms and I can not find info on appending each line of one file to the same line of another file. I know that I can cat one file to another or append the 2nd file to the end of the 1st but not quite sure how to append one line of data to another. For example
File 1 has ... (2 Replies)
Discussion started by: scw132
2 Replies
4. AIX
Dear all experts,
I have a LTO3 tape drive and thinking of upgrade to LTO4 drive.
Before we proceed to upgrade, I have 1 question to ask.
As I will use the backup tape to restore into other server (pSeries p550), I have the problem of if I backup in LTO4 tape in future, how can I restore the... (1 Reply)
Discussion started by: kwliew999
1 Replies
5. Shell Programming and Scripting
I have on file abc.txt
abc.txt:
20090807
Now I want to delete empty lines which has tap/whit spaces from abc.txt .and store the date value in the file into variable.some processs will update the this file with some date . if the process updtes thiis file with empty string , write the... (3 Replies)
Discussion started by: Gopal_Engg
3 Replies
6. Shell Programming and Scripting
Hi,
I would like to know if it's possible to append data into a variable, rather than into a file. Although I can write information into a temporary file in /tmp, I'd rather if possible write into a variable, as I don't like the idea that should my script fail, I'll be polluting the server with... (5 Replies)
Discussion started by: michaeltravisuk
5 Replies
7. Shell Programming and Scripting
Hi.
I wrote a very simple script and it doesn't work :(
It is supposed to go to a certain directory, execute some command and append the output to the file "expo.dat"
what it does is that it writes to the file only one entery. I dont know if Im using the write synthax for "append". Here is... (3 Replies)
Discussion started by: Enigma08
3 Replies
8. AIX
Hi, I am using AIX 5.3.0.0 and Ultrium LTO3 Tape Drive as rmt1. I have backup some of my database file using command "pax" as
pax -wvf /dev/rmt1 "./data01/abc.dmp"
But when I tried to read the file from tape by issuing the command,
pax -vf /dev/rmt1
The error message displayed as
pax:... (4 Replies)
Discussion started by: kwliew999
4 Replies
9. Shell Programming and Scripting
Hi,
Am trying to write a shell script which will append a header and a footer to an existing file. Header will contain details like the current date while the footer will contain the no: of records listed in the file.
I know we can use the CAT command, but i have no clue abt the syntax to... (4 Replies)
Discussion started by: brainstormer
4 Replies
10. UNIX for Dummies Questions & Answers
I need to know how to record the hostname, date/time and all of the process and send it all to one file. I know that the commands I need are hostname, date and ps but I don't know how to do them all and send them all to the same file. Please help! (1 Reply)
Discussion started by: precious51980
1 Replies
TM(4) Kernel Interfaces Manual TM(4)
NAME
tm - TM-11/TU-10 magtape interface
DESCRIPTION
The files mt0, ..., mt7 refer to the DEC TU10/TM11 magtape. When closed it can be rewound or not, see below. If it was open for writing,
two end-of-files are written. If the tape is not to be rewound it is positioned with the head between the two tapemarks.
If the 0200 bit is on in the minor device number the tape is not rewound when closed.
A standard tape consists of a series of 512 byte records terminated by an end-of-file. To the extent possible, the system makes it possi-
ble, if inefficient, to treat the tape like any other file. Seeks have their usual meaning and it is possible to read or write a byte at a
time. Writing in very small units is inadvisable, however, because it tends to create monstrous record gaps.
The mt files discussed above are useful when it is desired to access the tape in a way compatible with ordinary files. When foreign tapes
are to be dealt with, and especially when long records are to be read or written, the `raw' interface is appropriate. The associated files
are named rmt0, ..., rmt7. Each read or write call reads or writes the next record on the tape. In the write case the record has the same
length as the buffer given. During a read, the record size is passed back as the number of bytes read, provided it is no greater than the
buffer size; if the record is long, an error is indicated. In raw tape I/O, the buffer must begin on a word boundary and the count must be
even. Seeks are ignored. A zero byte count is returned when a tape mark is read, but another read will fetch the first record of the new
tape file.
FILES
/dev/mt?, /dev/rmt?
SEE ALSO
tp(1)
BUGS
If any non-data error is encountered, it refuses to do anything more until closed. In raw I/O, there should be a way to perform forward
and backward record and file spacing and to write an EOF mark.
TM(4)