i have this method in csh that check for file exist.
#check that file exists
if ( ! -e $6$5 ) then
echo $6$5 Not Found
exit 8
endif
however i wanted in to be in just sh. so i change the code to:
if ; then
echo $6$5 Not Found
exit 8
fi
I get error... (1 Reply)
Hi All,
I am trying to put the csh variable into a perl.
In the below case, i am trying to put the csh variable "var" into my perl code. I tried to use '"$var"' but i don;t think it works.
Can anybody help me pls?
#!/bin/csh
set var = `echo "xxx"`
perl myperlcode.pl file
... (9 Replies)
Hi Everyone,
I have a body of code that I'd like to know how to convert to a csh file.
In Unix, under a directory, I wish to ls into each of its subdirectories:
In Unix prompt I type
foreach i(*)
foreach? ls $i
foreach? end
however, when I try to store this body of code in .csh:
... (2 Replies)
Hi All,
Could any one of you give me a hand to convert the following line of codes from .sh to .csh please ?
proc_id=`fuser /tmp/test`
if
then
echo "File is not being used by any thing"
fi
if
then
echo "File is being used... please wait"
sleep 1
fi
Regards.
---------- Post... (1 Reply)
Hi all,
Not sure if this should be in the programming forum, but I believe it will get more response under the Shell Programming and Scripting FORUM.
Am trying to write a customized df script in Perl and need some help with regards to using arrays and file handlers.
At the moment am... (3 Replies)
Dear all
I am installing some eda software using script. My OS is ubuntu 10.04 and the eda software writing in csh. Since ubuntu reading script file in sh writting. I need someone can help me to convert some definition in script from csh to sh. Below is part of script
set archinfo =... (3 Replies)
Hi,
I am currently using the below code and it throws an error saying badly placed ()'s. I am not sure if this right way to convert html to PDF, please help..I am using C-shell script
system ("../html2doc pdf 1000 portrait html$prnfile.html $prnfile.pdf ")
print "Content-type:application/pdf... (7 Replies)
Discussion started by: lakers646
7 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)