Missing argument for option: n Error Post: 302991109

9 More Discussions You Might Find Interesting

1. Solaris

ps: 65535 is an invalid non-numeric argument for -p option

I want to figure out what is the reason of error message I have in Solaris 10. Why Solaris 10 dosn't recognize 65535? ps: 65535 is an invalid non-numeric argument for -p option usage: ps 'format' is one or more of: Thank you

2. Shell Programming and Scripting

option followed by : taking next option if argument missing with getopts

Hi all, I am parsing command line options using getopts. The problem is that mandatory argument options following ":" is taking next option as argument if it is not followed by any argument. Below is the script: while getopts :hd:t:s:l:p:f: opt do case "$opt" in -h|-\?)...

3. Shell Programming and Scripting

Cannot compare argument in if statement in csh/grep command if argument starts with �-�

If ($argv == “-debug”) then Echo “in loop” Endif But this is not working. If I modify this code and remove “-“, then it works. Similarly I am getting problem using grep command also Grep “-debug” Filename Can someone please help me on how to resolve these...

4. Shell Programming and Scripting

command-line line 0: Missing yes/no argument

Hi Guys When I run the below command ssh -o 'PasswordAuthentication yes' -o 'PreferredAuthentications publickey' -i $HOME/.ssh/id_dsa Server_Name I found the below error ommand-line line 0: Missing yes/no argument Kindly help me to sort out Double post, continued...

5. Shell Programming and Scripting

find: missing argument to `-exec' while redirecting using find in perl

Hi Friends, Please help me to sort out this problem, I am running this in centos o/s and whenever I run this script I am getting "find: missing argument to `-exec' " but when I run the same code in the command line I didn't find any problem. I am using perl script to run this ...

6. UNIX for Advanced & Expert Users

Error:--test: argument expected--Even though i give an argument.

Hi All, I am running the script VBoxManage list vms |sed 's/"//g' | cut -d " " -f1 > har1out.mytxt result=`cat har1out.mytxt | grep $1' echo $result echo $1 { if then echo pass else echo fail fi

7. Shell Programming and Scripting

passing an option as an argument!

Hi Folks I have got to the point where I can specify the arguments but how to pass an option is still mystery to me. Example: temp.csh a b c d set temp1 = $argv set temp2 = $argv set temp3 = $argv echo $temp1 a echo $temp2 b echo $temp3 c d I WANT: temp.csh a b c d -S 1 set temp1...

8. Shell Programming and Scripting

ksh - default value for getopts option's argument

Hello everyone, I need help in understanding the default value for getopts option's argument in ksh. I've written a short test script: #!/bin/ksh usage(){ printf "Usage: -v and -m are mandatory\n\n" } while getopts ":v#m:" opt; do case $opt in v) version="$OPTARG";; ...

9. UNIX for Beginners Questions & Answers

Find: missing argument to `-mtime'

this find command works when using manually on the command line -- $ ls -latr file*.log -rw-r--r-- 1 oracle dba 75 Jan 4 05:00 file_2.log -rw-r--r-- 1 oracle dba 75 Jan 4 05:00 file_1.log $ $ find . ! -name -prune -type f -name "file*.log" -daystart -mtime 2 ./file_1.log ./file_2.log $...

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)