It would be simpler to just place the monitored and monitoring code in the same process group and use kill 0 to terminate the entire group.
The highlighted redirections can be omitted if the job control messages aren't a bother.
However, in my opinion, a fifo-based solution is a superior approach. Since reading on a fifo blocks, there's no need for a polling while-loop and explicit sleeps.
When the awk script exits (after three matches, presumably), tail is killed.
If portability isn't a concern, (ksh or bash) coprocesses can be used instead of mkfifo.
Regards,
Alister
Last edited by alister; 10-19-2013 at 08:31 AM..
Reason: Deleted unused variable
These 2 Users Gave Thanks to alister For This Post:
Hi all,
I've a structure let's say
typdef struct a { int a; int b; char* string} b;
I need to make the function smth like readdir(), returning everytime it's called pointer to the next structure. Let's say functions would read the next file in the directory and all the permitions put it in... (2 Replies)
Hello
I wander if im doing :
ls -l and its giving me lets say 3 results :
-rw-r--r-- 1 blah other 1789 May 19 2003 foo.c
-rw-r--r-- 1 blah other 1014 May 19 2003 foo.h
-rw-r--r-- 1 blah other 270 May 19 2003 foo1.c
now I would like to use the first... (1 Reply)
Hello,
i am trying to write a script file in awk which yields me the number of lines,characters and words, i checked it many many times but i am not able to find any mistake in it. Please tell me where i went wrong.
BEGIN{
print "Filename Lines Words Chars\n"
}
{
filename=filename + 1... (2 Replies)
Please help in the following problem:
Input is:
Pritam
123
456
Patil
myname
youname
Pritam
myproject
thisproject
iclic
Patil
remaining text
some more text
I need the command which will display the no of lines between two words in the whole file.
e.g. Display all the no of lines... (5 Replies)
hello,
i 'd like your help about a bash script which:
1. finds inside the html file (it is attached with my post) the code number of the Latest Stable Kernel,
2.finds the link which leads to the download location of the Latest Stable Kernel version,
(the right link should lead to the file... (3 Replies)
Hi everybody,
i have this biological situation to fix:
> Id.1
ACGTACANNNNNNNNNNNACGTGCNNNNNNNACTGTGGT
>Id.2
ACGGGT
>Id.3
ACGTNNNNNNNNNNNNACTGGGGG
>Id.4
ACGTGCGNNNNNNNNGGTCANNNNNNNNCGTGCAAANNNNN
........
....
These are nucleotidic sequences with some "NNNN..." always of the same... (4 Replies)
Hi,
I have a requirement to to an ldapsearch and remove the shadow attributes in the output file.
What I do is ldapsearch() | operation to remove shadow > FILE
The ldapsearch gives output like this(with same line formation):
objectClass: FSConfig
objectClass: extensibleObject
fsCAIP:... (10 Replies)
Hey everyone!
I have a tab delimited data set which I want to create an output contained the calculation of number of those lines with a certain value in 2nd and 3rd column.
my input file is like this:
ID1 1 10M AAATTTCCGG
ID2 5 4M ACGT
ID3 5 8M ACCTTGGA
ID4 5 ... (7 Replies)
Hi ,
I need to count the number of errors associated with the two words occurring in the file. It's about counting the occurrences of the word "error" for where is the word "index.js". As such the command should look like. Please kindly help. I was trying: grep "error" log.txt | wc -l (1 Reply)
Is there an efficient awk that can count the number of lines that occur in between two tags.
For instance, consider the following text:
<s>
Hi PP -
my VBD -
name DT -
is NN -
. SENT .
</s>
<s>
Her PP -
name VBD -
is DT -
the NN -
same WRT -
. SENT -
</s>
I am interested to know... (4 Replies)
Discussion started by: owwow14
4 Replies
LEARN ABOUT NETBSD
set_color
set_color(1) fish set_color(1)NAME
set_color - set_color - set the terminal color
set_color - set the terminal color
Synopsis
set_color [-v --version] [-h --help] [-b --background COLOR] [COLOR]
Description
Change the foreground and/or background color of the terminal. COLOR is one of black, red, green, brown, yellow, blue, magenta, purple,
cyan, white and normal.
o -b, --background Set the background color
o -c, --print-colors Prints a list of all valid color names
o -h, --help Display help message and exit
o -o, --bold Set bold or extra bright mode
o -u, --underline Set underlined mode
o -v, --version Display version and exit
Calling set_color normal will set the terminal color to whatever is the default color of the terminal.
Some terminals use the --bold escape sequence to switch to a brighter color set. On such terminals, set_color white will result in a grey
font color, while set_color --bold white will result in a white font color.
Not all terminal emulators support all these features. This is not a bug in set_color but a missing feature in the terminal emulator.
set_color uses the terminfo database to look up how to change terminal colors on whatever terminal is in use. Some systems have old and
incomplete terminfo databases, and may lack color information for terminals that support it. Download and install the latest version of
ncurses and recompile fish against it in order to fix this issue.
Version 1.23.1 Sun Jan 8 2012 set_color(1)