I think your syntax is wrong. You don't pipe to/from files, only between processes. To files, you redirect. <file reads, >file writes.
If you're using the windows CMD shell and not a real UNIX shell, "cat *.txt" won't work, * won't expand. * only works for a few special command like DEL and COPY in windows CMD.
You could try find, which will run cat many times and put them all together, but I don't think it will sort the names that way.
If you have a c:\wbin\sh.exe, you should be able to run it to get a real shell, and 'cat tmp/*.log' in that and get what you expect. "c:\wbin\sh.exe scriptfile.sh" to run scriptfile.sh from disk so you don't have to type a painful number of arguments into your system() command.
Last edited by Corona688; 01-28-2011 at 02:08 PM..
I have 2 files with many lines.
File one example:
CN=VXX,CN=ug88888,OU=America,OU=State,OU=VXX,
File two example:
ul22222 Jon Smith
ug8888 Mildred Apple
I need a routine that will take the ug88888 portion of the first file and pull out the corresponding full line in file two. Then add the... (2 Replies)
I need to write a perl script to execute external programs and grab the output and return code. Each program should be killed if it has not completed within X seconds.
Imagine that the script goes something like this :
@commands = &get_commands();
foreach $cmd (@commands) {
$pid =... (4 Replies)
Hi, all.
I need a shell script which gathers data from a remote XML file and then displays it according to my needs.. I need this for my job due to the fact that I need to keep track price changes of euro, usd, gold, etc.
The XML file I am talking about is located at this page: cnnturk dot... (4 Replies)
hi everyone,
i am a newbie in shell programming. and i want to simply go through a text file that contains 3 "columns", split by ';'
customerID ; link-to-contract ; save-as-filename
so an example would simply look like this
now i want to loop through every line, and save the file from... (3 Replies)
I want to sort like below
Suppose few lines in a file is like this
systemid:ABC messagedestination:batchxpr replytoqname: myca
systemid:BCD messagedestination:realtime replytoqname: myca
systemid:ABC messagedestination:realtime replytoqname: eac
systemid: BCD messagedestination:mqonline... (1 Reply)
Hi there,
I have tried using the "find" command to do this but to no avail as the "find -mtime" command I used descend to the directories from my current working directory.
Say in "directoryA" has multiple files and those files are created on a daily basis.
Under "directoryB", there are... (4 Replies)
I have log files with following format -
YYYY/MM/DD HH:mm:ss.msec|field2|filed3| log message
Now the message itself can be multi line message containing new line character.
for e.g.
2013/02/05 15:33:12.234|abc|xyz| This is first single line message.
2013/02/05 15:33:12.786|abc|xyz| This... (6 Replies)
Hi all,
I wanted to save the values of a file that contains unique entries based on a specific column (column 4). my sample file looks like the following:
input file: 200006-07file.txt
145 35 10 3
147 35 12 4
146 36 11 3
145 34 12 5
143 31 15 4
146 30 14 5
desired output files:... (5 Replies)
Hi,
i need help with a file creation of an output program. I've got a program that with #find creates an output for each files in a directory.
If i give this command :
-o spec$(date -u +%Y%m%dt%H%M)
it creates just one file, overwriting all the others since it is the creation date .... (2 Replies)
Discussion started by: Board27
2 Replies
LEARN ABOUT CENTOS
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)