#! /usr/bin/sh
#*****************************************************************************
# *** get_input (question variable) ***
#*****************************************************************************
get_input ()
{
echo "${BOLD}${1} : "
read INPUT_VAR
echo "${OFF}"
export ${2}_INPUT=$INPUT_VAR
}
# End of get_input ()
#*****************************************************************************
# *** end get_input (question variable) ***
#*****************************************************************************
get_input "Please provide instance name (e.g. backp101) " INSTANCE
export INSTANCE_INPUT=`echo $INSTANCE_INPUT | awk '{print tolower( $1 )}'`
export INSTANCE=`echo $INSTANCE_INPUT`
DATABASE_CHECK_OK=N
cat /opt/oracle/admin/etc/oratab | while read line
do
INSTANCE_CHECK=`echo $line | cut -c 1-8`
if [ "$INSTANCE_CHECK" = "$INSTANCE_INPUT" ]
then
echo "Y"
DATABASE_CHECK_OK=Y
break
else
echo "N"
DATABASE_CHECK_OK=N
fi
done
echo "DATABASE_CHECK_OK:" $DATABASE_CHECK_OK
the problem is with the variable DATABASE_CHECK_OK
if the variable get DATABASE_CHECK_OK = Y (change the value inside the if)
and the while ends the variable still having N as value
this is the output that I'm getting:
Code:
Please provide instance name (e.g. backp101) :
eddyt101 <-- input value
N
N
Y
DATABASE_CHECK_OK: N
I'm in the same boat as Barbus - same exercis (https://www.unix.com/shell-programming-scripting/43609-processes-users.html)
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I'm in the same boat as Barbus - same exercis (https://www.unix.com/shell-programming-scripting/43609-processes-users.html)
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I get the following error while executing the shell script. I did not get an error when I ran the script in a different environment (unix server).
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This is the line which gives error
string=(${pos_array})
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TERM=ansi;export TERM
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Follow the below command:
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if ]; then ...
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Discussion started by: aldowski
2 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)
04-30-2010
