I am creating a script to monitor a certain applications running in my Unix system.
My script order goes this way:
Code:
df -h /of/a/filesystem
tail -5 /path/to/an/application/availability
su -c "jsmon pf=(profile of my application) `echo "p"`" usradm
#EOF
I am encountering problem on my 3rd line. Basically what I wanted is when
my script run, it switches to user "usradm" execute command "jsmon pf=(profile of my application" and then echo the letter "p".
My script runs the switch to usradm command and executes program "jsmon pf=(profile of my application)" however won't execute "p" command after and getting error like:
Code:
JStart Monitor Program
jsmon=>appparam(2): fopenU("/home/usradm","r"): No such file or directory
jsmon=>No Profile used.
jsmon=>appparam: SYSTEMNAME neither in Profile nor in Commandline
Thu Oct 20 06:45:30 2016 (initial: p)
JsfOpenShm failed: object not found
Cannot access shared memory.
Thu Oct 20 06:45:30 2016>
Please help.
Thank you!
Moderator's Comments:
Please use CODE tags as required by forum rules!
Last edited by RudiC; 10-20-2016 at 05:58 AM..
Reason: Added CODE tags.
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Discussion started by: alvinoo
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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)
10-20-2016
