I have a problem at work which I have managed to break down into a simple test scenario:
I have written a monitoring script that outputs every second the status of various processes, but for now, lets just print the date
input.sh:
This will produce results ok for logging, but I have also started on a script that takes this input and processes it on the fly. For now, lets use...
output.sh
Now, make them executable etc and run them, piping input to output:
So that is my problem. Unsurprisingly, if you just grep the results of input.sh they are displayed every second.
I was wondering if, assuming I've been clear, anyone knew a reason for this and how to avoid it? My output.sh is supposed to update every second also, and currently it is displaying the updates in batches after long pauses. Is there a better way than while read to get the input from a pipe? Maybe that's it? I'm not a complete novice, but this is my first dealing with writing scripts that can be piped to.
I've tried with taking the delay out, although the delays are much reduced, they still exist. I've also tried the search here, other places, and google, but haven't found anything (though the search terms are pretty ubiquitous)
While installing a firewall, I was pinging the interface from SCO 5.0.6 Openserver box, while no response, I hit "DEL" to cancel, but no cancel. Then all of a sudden I get BOO-KOO traffic lights on HUB and Switch.... Then a kernel trap error. System froze... Proceeded with a cold boot. Now I have... (8 Replies)
Howdy folks,
I am fairly new to scripting but have lost of expirience in c++, pascal, and a few other. I am trying to complete a file search script that is sent a file name containing data to search that is arranged like this
"id","name","rating"
"1","bob","7"
etc
and an argument to... (1 Reply)
Hi,
I need to use a double grep so to speak. I need to grep for a particular item say BOB and then for each successful result I need to grep for another item say SMITH.
I tried grep "BOB" filename | grep "SMITH"
but it does not seem to work.
I can achieve my desired result using an... (12 Replies)
$>cat file.txt
123 d3
234 abc 3
zyf 23
124 def 8
ghi kz0
...
...
I have the following output on the screen through <some command>.
$> <some command>
abc
def
ghi
...
...
I have to search for each of these patterns in the file.txt and print the lines in file.txt matching the... (4 Replies)
Hi everybody,
I have a big file with blast results (if you know what this means, otherwise look at it just as a text file with a specific form).
I am trying to extract some ids from within this file, which have certain parameters.
For example, some Of my IDs have the term 'No hit results'... (1 Reply)
Hi everybody,
I have a big file with blast results (if you know what this means, otherwise look at it just as a text file with a specific form).
I am trying to extract some ids from within this file, which have certain parameters.
For example, some Of my IDs have the term 'No hit results'... (6 Replies)
Hi,
I have a number of files containing the information below.
"""""
Fundallinfo
6.3950 14.9715 14.0482
"""""
I would like to grep for Fundallinfo and use it to read the next line? I ideally would like to read the three numbers that follow in the next line and... (2 Replies)
Hi guys.
You'd have to excuse me a bit, as I'm a noob. I really try to avoid asking questions and do research for whatever linux issues that may arise.
I am experiencing a long wait for the shell to come up when I ssh or telnet into a Sunos 5.10 environment.
It takes 70 seconds to give me... (12 Replies)
cat file
1 aaa
2 bbb
3 ccc
4 ddd
In TextEdit, I then copy the characters “ccc” to the clipboard. The problem is that the following command gives no output:
bash-3.2$ pbpaste | grep - file
Desired output:
3 ccc
What should the syntax be for that command? I am using MacOS El... (3 Replies)