Good you found a solution on your own. How about some improvements? read the MyWebApps file in lieu of catting it in a "command substitution" (saves a process creation), write to the log file outside the loop (avoids opening / closing it over and over again), and combine five awk executions into one, like
Well I have a 3000 lines result log file that contains all the machine data when it does the testing... It has 3 different section that i am intrsted in
1) starting with "20071126 11:11:11 Machine Header 1"
1000 lines...
"End machine header 1"
2) starting with "20071126 12:12:12 Machine... (5 Replies)
hi,
new to scripting and would like to know how can I have a script which will curl a few URLs and have the results such as the URLs being curled, dns lookup time, connection time, total time, etc save in a html format in a form of table with column and rows.
thank you. (4 Replies)
Good morning everybody,
Beeing an absolute newbie in shell scripting I would like to look for some help here.
I would like to read an external text file and format the data and write it to an output file.
What I was trying to do was to display the result (this worked).
But now I... (1 Reply)
Hi,
I am confused how to proceed firther please find the problem below:
Input Files:
DCIA_GEOG_DATA_OCEAN.TXT
DCIA_GEOG_DATA_MCRO.TXT
DCIA_GEOG_DATA_CVAS.TXT
DCIA_GEOG_DATA_MCR.TXT
Output File Name: MMA_RFC_GEOG_NAM_DIM_LOD.txt
Sample Record(DCIA_GEOG_DATA_OCEAN.TXT):(Layout same for... (4 Replies)
Hello,
How can I run this script every 1 hour and save its result to result.txt
ifconfig | grep 'inet addr:'| grep -v '127.0.0.1' | cut -d: -f2 | awk '{ print $1}'
Regards
Shaan (5 Replies)
Hi friends...I have 2 files, file1.txt and reference.txt
I could able to find difference using diff and following command
awk 'NR == FNR { A=1; next } !A' reference.txt file1.txt
above command listing data which is not in reference.txt
12.12 87
11.95 88
11.83 89
12.55 84... (12 Replies)
Hello everybody,
I have a file to split in a bit different way. My file looks like this:
My_file.dat
123333333|01|38|440X|P
384747382|32|31|440X|P
320384743|32|54|420Y|I
843739349|12|43|420Y|I
I need to split it into:
MYFILE_440X_P.dat
123333333|01|38
384747382|32|31
... (3 Replies)
Hi,
I am using SUN SOLARIS (SunOS sun4v sparc SUNW, T5240).
I have a huge data file with header and trailer. This file gets used into an ETL process. ETL skips the header record (which is the first record of the file) and loads the rest of the record. The file can be delimited (comma,... (5 Replies)
This question could be specific to the site subdivx.com In the past, I've been able to download a file following location using cURL but there is something about subdivx.com that's different and can't figure out how to get it to work.
I tried the following directly in the terminal with no... (5 Replies)
Discussion started by: MoonD
5 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)