This is likely to be a dumb one.
How can I use sed to substitute string occurances having it read from an input file and write to this very same file ?
I have a file with lots of occurances of '2006', I want to change it to '2007', but I'd like these changes to be saved on the input file.
... (5 Replies)
Is there any way to write to a text file with scripting? I need to write to a text file two lines of text for the amount of files in the current directory. (9 Replies)
Hi,
We have smb client running on two of the linux boxes and smb server on another linux system. During a backup operation which uses smb, read of a file was allowed while write to the same file was going on.Also simultaneous writes to the same file were allowed.Following are the settings in the... (1 Reply)
hi
i am quite new to shell scripting and need help in reading and writing in xml file
i have an xml file with format:
<main>
<store>
<name>ABC</name>
<flag>0</flag>
<size>123<size>
</store>
<store>
<name>DEF</name>
... (2 Replies)
hello world, i was looking for exemples for writing ans reading in / from a file, more exactly a text file; and how i'm only at very beagining, if anyone have some exemples very simple, very 'classic' , -with explications- and not hard to undersand . i was wondering that some of you are theacher... (6 Replies)
I have got a file in following format:
AAAAAAA
BBBBBBBB
CCCCCCC
DDDDDDD
I am trying to read this file and out put it in following format:
AAAAAAA,BBBBBBB,CCCCCCC,DDDDDD
Preferred method is shell or Perl.
Any help appreciated. (11 Replies)
Hello Guys, How all are doing?
I have an issue in Unix and want help from all of you
I have a file in UNIX which it read by line by line , If at the end of line '0' is written the it should fetch that line into another file and change '0' to '1'
and If at the end of line '1' is written then it... (10 Replies)
Hi,
I am trying to do a write operation followed by a read operation on the same file through Perl, expecting the output produced by read to contain the new lines added, as follows:
#! /usr/bin/perl -w
open FH, "+< testfile" or die "$@";
print FH "New content added\n";
while (my $line =... (1 Reply)
Hi
I am trying to build a web form where it can take the input from the user and write it to a file. And when I will open that form again that for should read the file that was created at the 1st step and all the fields should auto populate from that file. I have 20 text fields in my form. I... (1 Reply)
Discussion started by: sauravrout
1 Replies
LEARN ABOUT V7
tm
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)