Well it's been a long time since I have used any OS besides apples and windows (raising my son). My principal would like our teachers to use UNIX as their mail system. That's not a problem, the mail system is like riding a bike you never forget. Here's my problem. She wants me to write a script... (2 Replies)
I am trying to run awk on a 55 page Word document.
I wanted to delete every occurrence of <company>, <script>, </scripts> from the file then cut & paste all of the appropriate fields to an Excel spreadsheet.
Also the code is suppose to replace the dates in a new format such as "xxxx-xx-xx" ... (2 Replies)
hi, I know we can do this; but dont know how..
I open a file using vim..browse thru it and then say :wq after reaching some line;
The next time I open the same file, I want vim to position the cursor on the line where I left last time;
anyone? (2 Replies)
I have a simple script. I have tried this in Bourne, Korn and C shells in my AIX ...no luck
unset STARTQUEUE
# Check parameters
if
then
echo "*E* Batch Queue parameter is missing"
else
$BATCHQ/bin/setup.sh
STARTQUEUE=$1
# If the queue doesn't exist, create it
... (3 Replies)
Discussion started by: KenL
3 Replies
5. Forum Support Area for Unregistered Users & Account Problems
Hi All,
Have only recently returned to Unix.com due to other activities (*oh the shame of it all).
Anyways, when I initially came back to redesigned/revamped site I couldn't remember any of my logins. I'd originally thought that I'd used the UID of 'Cameron' but couldn't remember any details... (2 Replies)
Hello dear community!
I have the following task to accomplish: there is a directory with approximately 2 thousand files. I have to write a script which would randomly extract 200 files on the first run. On the second run it should extract again 200 files but that files mustn't intersect with... (5 Replies)
It showed a cleaning woman (probably in the evening, after most of the other employees had left work) happily typing commands on a dot matrix terminal (could've been a DEC LA120, IIRC) just because "unix is so easy to use, even a cleaning woman can use it!".
If you know where to find a scanned... (2 Replies)
Discussion started by: mathiasbage
2 Replies
8. Post Here to Contact Site Administrators and Moderators
Howdy,
I clicked the rememberer me when I log in, and evidently I really do not understand what that means. I had hoped that at least it would remember my user name for the next time that I log in. However, when I log out, I see a message about cookies being removed and one other thing that I... (1 Reply)
Hi all,
I'm new to UNIX world and new to this forum. As I observed there are lot of commands that needs to be remembered in UNIX programming. I'm into DevOps and can anyone please tell me what are all the important commands that are useful for DevOps Engineer.
NOTE: Please correct me if my... (3 Replies)
Discussion started by: maxlink
3 Replies
LEARN ABOUT SUSE
unbuffer
UNBUFFER(1) General Commands Manual UNBUFFER(1)NAME
unbuffer - unbuffer output
SYNOPSIS
unbuffer program [ args ]
INTRODUCTION
unbuffer disables the output buffering that occurs when program output is redirected from non-interactive programs. For example, suppose
you are watching the output from a fifo by running it through od and then more.
od -c /tmp/fifo | more
You will not see anything until a full page of output has been produced.
You can disable this automatic buffering as follows:
unbuffer od -c /tmp/fifo | more
Normally, unbuffer does not read from stdin. This simplifies use of unbuffer in some situations. To use unbuffer in a pipeline, use the
-p flag. Example:
process1 | unbuffer -p process2 | process3
CAVEATS
unbuffer -p may appear to work incorrectly if a process feeding input to unbuffer exits. Consider:
process1 | unbuffer -p process2 | process3
If process1 exits, process2 may not yet have finished. It is impossible for unbuffer to know long to wait for process2 and process2 may
not ever finish, for example, if it is a filter. For expediency, unbuffer simply exits when it encounters an EOF from either its input or
process2.
In order to have a version of unbuffer that worked in all situations, an oracle would be necessary. If you want an application-specific
solution, workarounds or hand-coded Expect may be more suitable. For example, the following example shows how to allow grep to finish pro-
cessing when the cat before it finishes first. Using cat to feed grep would never require unbuffer in real life. It is merely a place-
holder for some imaginary process that may or may not finish. Similarly, the final cat at the end of the pipeline is also a placeholder
for another process.
$ cat /tmp/abcdef.log | grep abc | cat
abcdef
xxxabc defxxx
$ cat /tmp/abcdef.log | unbuffer grep abc | cat
$ (cat /tmp/abcdef.log ; sleep 1) | unbuffer grep abc | cat
abcdef
xxxabc defxxx
$
BUGS
The man page is longer than the program.
SEE ALSO
"Exploring Expect: A Tcl-Based Toolkit for Automating Interactive Programs" by Don Libes, O'Reilly and Associates, January 1995.
AUTHOR
Don Libes, National Institute of Standards and Technology
1 June 1994 UNBUFFER(1)