10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
I have this fastq file:
@M04961:22:000000000-B5VGJ:1:1101:9280:7106 1:N:0:86
GGGGGGGGGGGGCATGAAAACATACAAACCGTCTTTCCAGAAATTGTTCCAAGTATCGGCAACAGCTTTATCAATACCATGAAAAATATCAACCACACCA
+test-1
GGGGGGGGGGGGGGGGGCCGGGGGFF,EDFFGEDFG,@DGGCGGEGGG7DCGGGF68CGFFFGGGG@CGDGFFDFEFEFF:30CGAFFDFEFF8CAF;;8... (10 Replies)
Discussion started by: Xterra
10 Replies
2. Shell Programming and Scripting
here's what im trying to do.
i have a file containing lines similar to this:
data.txt:
1hsRmRsbHRiSFZNTTA1dlEyMWFkbU5wUW5CSlIyeDFTVU5SYjJOSFRuWmpia0ZuWXpKV2FHTnRU
1lKUnpWMldrZFZaMG95V25oYQpSelEyWTBka2QyRklhSHBrUjA1b1kwUkJkd3BOVXpWM1lVaG5k... (5 Replies)
Discussion started by: SkySmart
5 Replies
3. Shell Programming and Scripting
Hi All.
Seeking for your assistance to get all the last 4 characters of each file before "." and put it in the variable
ex.
abcdZWU1501.csv
abcdXYZ1501.csv
abcdEFG1502.csv
abcdHIJ1501.csv
output will be:
1501
1502
What i did was (6 Replies)
Discussion started by: znesotomayor
6 Replies
4. Shell Programming and Scripting
sed -e "s// /g" old.txt > new.txt
While I do know some control characters need to be escaped, can normal characters also be escaped and still work the same way? Basically I do not know all control characters that have a special meaning, for example, ?, ., % have a meaning and have to be escaped... (11 Replies)
Discussion started by: ijustneeda
11 Replies
5. Shell Programming and Scripting
i need to replace the any special characters with escape characters like below.
test!=123-> test\!\=123
!@#$%^&*()-= to be replaced by
\!\@\#\$\%\^\&\*\(\)\-\= (8 Replies)
Discussion started by: laknar
8 Replies
6. Shell Programming and Scripting
Hi Gurus,
I am trying to execute the below command. However the output shows the value + path of the folder where the command is being executed. But I am only interested in the value but not the path.
du -hs /aps/inf/SeLogs
when I execute the above command, output is
32G... (5 Replies)
Discussion started by: svajhala
5 Replies
7. Shell Programming and Scripting
I've got a file (numbers.txt) filled with numbers and I want to replace each one of those numbers with a new random number between 0 and 9. This is my script so far:
#!/bin/bash
rand=$(($RANDOM % 9))
sed -i s//$rand/g numbers.txtThe problem that I have is that it replaces each number with just... (2 Replies)
Discussion started by: hellocatfood
2 Replies
8. UNIX for Dummies Questions & Answers
Hi,
I am having a file which contains records as follows:
DETAIL_KEY~12344|ACTIVE_PASSIVE~Y|AVG_SIZE_OF_RESPONSE~123123131
DETAIL_KEY~12344|ACTIVE_PASSIVE~Y|AVG_SIZE_OF_RESPONSE~123123131
DETAIL_KEY~12344|ACTIVE_PASSIVE~Y|AVG_SIZE_OF_RESPONSE~123123131... (4 Replies)
Discussion started by: Amey Joshi
4 Replies
9. Shell Programming and Scripting
Hi!
I have a file with some characters with accent.
I don't find the solution to translate
ô ö as o
à as a
é è as e
ç as c
With the command tr or sed?
I can't write sed 's/ô/o/g' because the copy/paste ô don't work.
Thanks! (1 Reply)
Discussion started by: Castelior
1 Replies
10. Shell Programming and Scripting
Is there a way to recursively find scripts/files with ^M characters embedded in them
Usually the case is when a file is saved on unix but in dos/windows format it ends up have ^M characters at the end of each line.
Please let me know if there is a way to recursively find them. (3 Replies)
Discussion started by: Anubhav
3 Replies
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)