Hi,
I want to run the command below in the background:
The file file.txt will start getting its contents written after this command has started getting run.
So the flow will be like this
Now if the pattern is found then the user will be notified with some message.
Any idea people?
Thanks a lot .
Hello everyone, say I have the following script, which contains serveral loops, if I run the script, it executes the loop one by one (after the a loop, it goes to b loop, then c, then d)
I figured I should be able to run all the loops at same time, but I don't know how, can anyone help a little... (2 Replies)
Hi folks,
Please advise which command/command line shall I run;
1) to display the command and its output on console
2) simultaneous to save the command and its output on a file
I tried tee command as follows;
$ ps aux | grep mysql | tee /path/to/output.txt
It displayed the... (7 Replies)
Hello Folks,
I have a script that runs a command (rsync) that sometimes takes a long time to complete and produces diagnostic output on stdout as it runs.
I am currently capturing this output in a variable and using it further in the script. I would like to continue to capture this output... (2 Replies)
#!/bin/sh
firefox index.html
firefox secondpage.html
hey guys, im not able to open up two pages at the same time...
it always open up index.html first, and only after i close it, then the 2nd page pops up...
is there any way i can run both commands at the same time?
i appreciate any... (2 Replies)
Hello,
I am trying to learn how to pass something more than a one-command startup for gnome-terminal.
I will give an example of what I'm trying to do here:
#! /bin/bash
#
#TODO write this for gnome and xterm
USAGE="
______________________________________________
${0##*/}
run... (0 Replies)
Flow of program:
C based CGI is used
CGI1:
-Gets called when user hits upload button(submit) ie form action = CGI1
-Does the file upload (copy to a directory etc)
JS, Ajax fucntion:
-A JS function is called when user hits upload button
-The JS function opens an Ajax request for CGI2... (8 Replies)
Hi everyone,
when executing this command in unix:
echo "WM7 Fatal Alerts:", $(cat query1.txt) > a.csvIt works fine, but running this command in a shell script gives an error saying that there's a syntax error.
here is content of my script:
tdbsrvr$ vi hc.sh
"hc.sh" 22 lines, 509... (4 Replies)
i Run 2 scripts on all of around 50 nodes every day.
1.Mod_1.sh
2.Mod_2.sh
eg..
i run file with specific node no like
Mod_1.sh NODE_(node number)
Mod_2.sh NODE_(node number)
I want to run both file by using single script with unique node number.
Eg..
Mod_new.sh NODE_(node... (11 Replies)
Hello,
I need to run multiple shell processes simultaneously and output of the first process shall be the input of the second process but first process is never ending so both should be running in parallel. I do not wish to wait the end of the first process. I am under ubuntu 16.04.
... (3 Replies)
Discussion started by: baris35
3 Replies
LEARN ABOUT DEBIAN
bup-margin
bup-margin(1) General Commands Manual bup-margin(1)NAME
bup-margin - figure out your deduplication safety margin
SYNOPSIS
bup margin [options...]
DESCRIPTION
bup margin iterates through all objects in your bup repository, calculating the largest number of prefix bits shared between any two
entries. This number, n, identifies the longest subset of SHA-1 you could use and still encounter a collision between your object ids.
For example, one system that was tested had a collection of 11 million objects (70 GB), and bup margin returned 45. That means a 46-bit
hash would be sufficient to avoid all collisions among that set of objects; each object in that repository could be uniquely identified by
its first 46 bits.
The number of bits needed seems to increase by about 1 or 2 for every doubling of the number of objects. Since SHA-1 hashes have 160 bits,
that leaves 115 bits of margin. Of course, because SHA-1 hashes are essentially random, it's theoretically possible to use many more bits
with far fewer objects.
If you're paranoid about the possibility of SHA-1 collisions, you can monitor your repository by running bup margin occasionally to see if
you're getting dangerously close to 160 bits.
OPTIONS --predict
Guess the offset into each index file where a particular object will appear, and report the maximum deviation of the correct answer
from the guess. This is potentially useful for tuning an interpolation search algorithm.
--ignore-midx
don't use .midx files, use only .idx files. This is only really useful when used with --predict.
EXAMPLE
$ bup margin
Reading indexes: 100.00% (1612581/1612581), done.
40
40 matching prefix bits
1.94 bits per doubling
120 bits (61.86 doublings) remaining
4.19338e+18 times larger is possible
Everyone on earth could have 625878182 data sets
like yours, all in one repository, and we would
expect 1 object collision.
$ bup margin --predict
PackIdxList: using 1 index.
Reading indexes: 100.00% (1612581/1612581), done.
915 of 1612581 (0.057%)
SEE ALSO bup-midx(1), bup-save(1)BUP
Part of the bup(1) suite.
AUTHORS
Avery Pennarun <apenwarr@gmail.com>.
Bup unknown-bup-margin(1)