Hi,
I have this file which has some octal NULL characters (\000). I need to replace these characters with an ASCII NULL.
I've tried using Perl, the UNIX tr command..
History of this
I received a COBOL generated file, ran the od command to convert to a xxx byte per record file.
Now,... (3 Replies)
Hi All,
Is there any way to append a newline character at the end of a file(coma-separated file), through shell script?
I need to check whether newline character exists at the end of a file, if it does not then append it.
Regards,
Krishna (1 Reply)
Hi All,
I have named a file with current date,time and year as follows:
month=`date | awk '{print $2}'`
date=`date | awk '{print $3}'`
year=`date | awk '{print $6}'`
time=`date +%Hh_%Mm_%Ss'`
filename="test_"$month"_"$date"_"$year"_"$time".txt"
> $filename
The file is created with a... (2 Replies)
Hi,
I have a .txt file which has a tilde(~) in it.
All that I want is to break into a newline whenever there is an occurence of '~'.
I have tried SED to do that but I could not succeed.
I would appreciate if I can get a shell script(ksh) for this problem real quick.
Thanks in advance.
... (5 Replies)
Hi Guyz,
I have an XML message in following format:
I want my contents to be formatted in following order:
i.e. I want a newline after every XML tag end.
How to do this?
Thnx in advance. (5 Replies)
How to replace null with space?
I want to make each line with 80 characters. If any line contains only 5 characters and remaining is null, then i want to make it as 80 characrets where 5 is original characters and remaining 75 characters will be null..
NULL can come in between the line,... (3 Replies)
Hi All,
I have following piece of code in UNIX C Shell script and I want to add one more command which can add newline at the end of file only if there is no newline character exists.
foreach file (`ls $dd_PLAYCARD_EDI_IN`)
if ( -f $dd_PLAYCARD_EDI_IN/${file} ) then
cat -n... (4 Replies)
Hi Gurus,
Need help. I'm a beginner in Unix. I have a requirement, need to add or append newline (\n) character in file.
Sample Data:
1|Main|Test|~#
2|Main|Hello|~#
3|Main|Unix|~#
4|Main|File|~#Output:
1|Main|Test|~#
2|Main|Hello|~#
3|Main|Unix|~#
4|Main|File|~#\n -- append only... (13 Replies)
Hello all,
I have maybe a simple Problem - but I do not know to handle it.
All what I want, is to write a line to file without a newline at the end. It works with "echo -n" for all lines, but not for the last one. At the end of the file is always a "0a" (hex)
My small script:
... (10 Replies)
I have a variable like below:
str1="10.9.11.128\n-rwxr-xr-x user1 2019-12-29 17:53 /var/branch/custom/tg.xml 286030210\n10.9.12.129\n-rwxr-xr-x user1 2019-12-29 17:53 /app/branch/custom/tg.xml 286030210\n10.9.20.130\n-rwxr-xr-x user1 2019-12-29 17:53 /web/branch/custom/tg.xml 286030210"
I... (8 Replies)
Discussion started by: mohtashims
8 Replies
LEARN ABOUT PLAN9
stream
STREAM(3) Library Functions Manual STREAM(3)NAME
stream - a structure for communications
SYNOPSIS
bind streamdevice dir
dir/data
dir/ctl
DESCRIPTION
A stream is not a device per se. However, many devices use the streams package in the kernel to implement communications channels. The
properties described here are common to all such channels.
All streams are represented by two standard files, ctl and data, plus any others the particular device wants to add. Reading and writing
the data file receives and sends data on the channel. If the channel is message oriented, each write will represent a message and each
read will return at most one message. If the buffer given in a read is smaller than the message, subsequent reads will return the remain-
der of the message.
Writing textual command strings to the ctl file performs control operations on the stream. The strings need not be null-terminated. Each
device may add to the control operations. The common control operations are:
hangup Hang up this stream. Any subsequent writes will return an error. The first subsequent read will return 0. All following
ones will return an error.
push name Push the module name onto the top of the stream.
pop Pop the top module off the stream
Reading the ctl file returns a textual identifier for the stream. This is used by multiplexed devices and its use is described with the
particular device.
SEE ALSO pipe(3), dk(3), cons(3), async(3), fcall(3), ip(3), reboot(3)SOURCE
/sys/src/9/port/st*.c
STREAM(3)