I have a variable (it is a date actually -> 2007-01-03) which
would be passed in as parameter, what I want is to parse in and put
year, month, and day in separate variables, I have tried the following
but doesn't work
echo $dt | awk -F- '{print $1 $2 $3}' | read y m d
Thanks in... (2 Replies)
I have a variable which has a full path to the file, for example :
A=/t1/bin/f410pdb
Does anybody know the command to parce this variable and assign the result to 3 other variables so each subdirectory name will be in a new variable like this
B=t1
C=bin
D=f410pdb
Many thanks -A (5 Replies)
Hi Dudes,
Can you please suggest me how to create a logfile to track the below script output ? Thanks
#!/bin/ksh
# backup the "std" I/P file descriptor
exec 5<&0
#echo "Proceed ?"
while read config_line; do
# backup the I/P file descriptor of "while" block
exec 6<&0
# restore the... (2 Replies)
I am looking to parse a text file output and set variables based on what is cropped from the parsing.
Below is my script I am looking to add this feature too.
All it does is scan a certain area of users directories for anyone using up more than X amount of disk space. It then writes to the... (4 Replies)
I created a script to do some work. I want to use "echo" to redirect "date" to log file. echo works to screen. But cannot redirect first or second "echo" output to logfile. Please help. My code looks like:
STARTTIME=`date +%m-%d-%Y`
LOGFILE=/directory/logfile.log
echo "Start time:" $STARTTIME... (8 Replies)
Friends,
Below is the script which writes output to LOGFILE, however I want the entire log written to LOGFILE and also console.
Please suggest me the changes I need to do here.
#!/bin/ksh
x=${0##*/}
LOGFILE="x.log"
echo "CAUTION : Files once deleted cannot be restored"
printf 'Would... (8 Replies)
Bonjour,
I've wrote a script to monitor a logfile in realtime. It is working almost perfeclty except for two things.
The script use the following technique :
tail -fn0 $logfile | \
while read line ; do
... some stuff
done
First one, I'd like a way to end the monitoring script if a... (3 Replies)
Friends,
I pass some runtime arguments (date, number) through ksh script to Oracle procedure, use input value and pass it on to procedure.
Oracle procedure gets input value, run query and logs everything in the logfile.
I'm facing with couple of challenges
1. Even though I pass all... (5 Replies)
Im trying to search for a single variable in the first field and from that output use awk to extract out the lines that contain a value less than a value stored in another variable. Both the variables are associated with each other.
Any guidance is appreciated.
File that contains the... (6 Replies)
Discussion started by: ncwxpanther
6 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)