02-06-2009
10 More Discussions You Might Find Interesting
1. Homework & Coursework Questions
Im trying to come up with a simple shell script to display info about the current user.`pwd`; `date` ; `who am i`
I want to give the option to save all the data thats display by the commands to a log file. With a timestamp as the name of the file
This is where im stuck
echo "Would you like to... (3 Replies)
Discussion started by: eddieq20
3 Replies
2. Shell Programming and Scripting
When a file generated by a shell script is sent as a mail (not an attachment), in MS Outlook, single lines of the file are displayed as two/three lines (as the lines are long). Is there a way to make each line to be displayed in 'single line with scroll bar' to enable viewing of the long line?
... (0 Replies)
Discussion started by: thulasidharan2k
0 Replies
3. Shell Programming and Scripting
When a file generated by a shell script is sent as a mail (not as an attachment), in MS Outlook, single lines of the file are displayed as two/three lines (as the lines are long). Is there a way to make each line to be displayed in 'single line with scroll bar' to enable viewing of the long line? (2 Replies)
Discussion started by: thulasidharan2k
2 Replies
4. Shell Programming and Scripting
Hi,
I have one file, say file 1, that has data like below where 19900107 is the date,
19900107 12 144 129 0.7380047
19900108 12 168 129 0.3149017
19900109 12 192 129 3.2766666E-02
... (3 Replies)
Discussion started by: Wynner
3 Replies
5. Shell Programming and Scripting
Hi.. I'm facing a trouble in replacing two blank lines in a file using shell script...
I used sed to search a line and insert two blank lines after the searchd line using the following sed command.
sed "/data/{G;G;}/" filename . In the file, after data tag, two lines got inserted blank lines..... (4 Replies)
Discussion started by: arjun_arippa
4 Replies
6. Shell Programming and Scripting
I am working on an assignment to pull all the records from excel sheet programatically and use the data for further calculations.
In this process, I first defined 10 records in excel sheet and executed the below code.
In the first run it is OK. But after deleting last few rows in excel sheet and... (0 Replies)
Discussion started by: giridhar276
0 Replies
7. Shell Programming and Scripting
I am fetching a database table in spool file and send that details as a email.
The Spooled file content is properly being displayed in UNIX.
See Example below :
ID|FILENAME |ABCDEF_DT |PROCESSED_DT |STATUS... (4 Replies)
Discussion started by: Ravi_007
4 Replies
8. UNIX for Dummies Questions & Answers
Total UNIX Rookie, but I'm learning. I have columns of integer data separated by spaces, and I'm using a Mac terminal.
What I want to do:
1. Compare "line 1 column 2" (x) to "line 2 column 2" (y); is y-x>=100?
2. If yes, display difference and y's line number
3. If no, increment x and y by... (9 Replies)
Discussion started by: markymarkg123
9 Replies
9. Shell Programming and Scripting
Dear Help,
I have been encountering a strange problem.
When I run a shell script, I do expect the output number of lines to be 12000 and it runs fine on one my linux w/s.But it just terminate at line 2704 on another linux machine.
I have put 'nedit text.file' at the last part of the script,... (5 Replies)
Discussion started by: Indra2011
5 Replies
10. UNIX for Beginners Questions & Answers
"Debain 9 - LXDE"
I execute follow line in the bash terminal:
/ts3/server/ts3server_startscript.sh start createinifile=1 | tee -a /ts3/server/key.txt
The displayed output looks like follow:
My key.txt file looks like follow:
How can i save the whole displayed text in my file?
Why does... (5 Replies)
Discussion started by: int3g3r
5 Replies
fifo2(n) fifo2(n)
__________________________________________________________________________________________________________________________________________________
NAME
fifo2 - Create and manipulate pipe fifo channels
SYNOPSIS
package require Tcl
package require memchan
fifo2
_________________________________________________________________
DESCRIPTION
The command described here is only available in a not-yet released version of the package. Use the CVS to get the sources.
fifo2 creates two stream-oriented in-memory channels and returns their handles as a two-element list. There is no restriction on the ulti-
mate size of the channels, they will always grow as much as is necessary to accomodate the data written into them.
In contrast to the channels generated by fifo a pair of channels created here is connected internally in such a way that data writ-
ten into one channel can be read from the other. All data written into them is read in the same order. This also means that the two
channels of the pair are not seekable.
The channels created here can be transfered between interpreters in the same thread and between threads. As both channels in the
pair can be transfered independently they can be used to create a bidirectional connection between two interpreters.
Memory channels created by fifo2 provide two read-only options which can be queried via the standard fconfigure command. These are
-rlength
The value of this option is the number of bytes currently available for reading from the channel.
-wlength
The value of this option is the number of bytes currently written into the channel.
Note that the two lengths are switched for the channels of a pair. In other words, the number of bytes written for one of the channels is
the number of bytes readable from the other end.
As the channels generated by fifo2 grow as necessary they are always writable. This means that a writable fileevent-handler will fire con-
tinuously.
The channels are also readable if they contain more than zero bytes. Under this conditions a readable fileevent-handler will fire continu-
ously.
SEE ALSO
fifo, memchan, null
KEYWORDS
channel, fifo, i/o, in-memory channel, memchan, stream
COPYRIGHT
Copyright (c) 1996-2003 Andreas Kupries <andreas_kupries@users.sourceforge.net>
Memory channels 2.2 fifo2(n)