Hi all,
I'm newbi in scripting.
could someone tell how to delete the ^M at the end of the linie with an awk command.
many thanks in advance. (2 Replies)
Any clues on how to parse a line returned from an ls command that allows for the filename to be fully passed even if it includes spaces? What I got close with is:
ls -ltra | awk '{print $1 "|" $3 "|" $4 "|" $5 "|" $6 "|" $7 "|" $8 "|" $9 $10 $11 $12 ... (etc)}'
However this clears the spaces in... (6 Replies)
Hi to all! I 'm new in unix programing so... may be I decided a wrong tool to solve the problem but anyway... all road goes to rome jajaja.
My question is: There is any way to print date at the END clause of an AWK script. I mean, I'm writing a tool with AWK and the results are redirected to a... (4 Replies)
Hello.
I'm using a file to "grep" in a 2nd one (with awk)
cat file1
2 first user
9 second user
1 third user (with a space after user)
I want to get the line except the 1st field so I do :
field=$(gawk '{$1 =""; print $0}' file | sed 's/^ //')
It works but it deletes... (5 Replies)
I have a textfile which I am parsing with awk. The lines do not have the same number of fields, so sometimes $3 is the last field, sometimes not.
When I do a 'printf("%s, %s\n", $2, $3)', if $3 is the last field in the line, when I cat the file the output looks something like this:... (3 Replies)
I'm new to awk, trying to understand the basics.
I'm trying to reset the counter everytime the program gets a new file to check.
I figured in the BEGIN part it would work, but it doesn't.
#!/bin/awk -f
BEGIN {counter=0}
{
sum=0
for ( i=1; i<=NF;... (1 Reply)
Hello,
I have another problem with my script. Please accept my apologies, but I am really nooby in sh scripts. I am writing it for first time.
My script:
returned=`tail -50 SapLogs.log | grep -i "Error"`
echo $returned
if ; then
echo "There is no errors in the logs"
fi
And after... (10 Replies)
Hi,
I tried to use a code to awk until the end of file. I not sure what is the syntax so my last paragraph is \n
`var=$(awk '/\n/ {P=0} /Policy Change/ {P=1} P' (2 Replies)
Discussion started by: alvinoo
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)