10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
I am having the following output when executing a dig command :
dig @1.1.1.1 google.com +noall +answer +stats
; <<>> DiG 9.11.4-P1 <<>> @1.1.1.1 google.com +noall +answer +stats
; (1 server found)
;; global options: +cmd obodrm.prod.at.dmdsdp.com. 86154 IN A ... (1 Reply)
Discussion started by: liviusbr
1 Replies
2. UNIX for Dummies Questions & Answers
Dear all,
I have a data like below (n of rows=400,000) and I want to extract the rows with certain strings. I use code below. It works if there is not too many strings for example n of strings <5000. while I have 90,000 strings to extract. If I use the egrep code below, I will get error:
... (3 Replies)
Discussion started by: forevertl
3 Replies
3. UNIX for Dummies Questions & Answers
Hi,
Im having some problems with this. I have loaded a file with html code. All code is placed in the same line. I want to get everything between two given strings (including these strings and get only the first appearance).
Example:
File contains <html><body><a href='a.html'>abc</a><a... (5 Replies)
Discussion started by: ngb
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4. Shell Programming and Scripting
I have the following lines in a log file. It would be great if some one can help me to create a new file with the just entries in the below format.
66.150.161.195 HPSAC=Z05
66.150.161.196 HPSAC=A05
That is just extract the IP address and the string DPSAC=its value
66.150.161.195 -... (1 Reply)
Discussion started by: Tuxidow
1 Replies
5. Shell Programming and Scripting
I need a script that extracts function names from php files together with their location (path and file in which they are defined).
The php files are located in several directories under a base directory.
Ideally the output should be something like:
"Path/FileName/FunctionName" for a... (2 Replies)
Discussion started by: bamse
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6. Shell Programming and Scripting
I want to extract the proper names with awk from a very long string, like: õ(k): </span><br /><a something="pls/pe/person.person?i_pers_id=3694&i_topic_id=2&i_city_id=3372&i_county_id=-1" target="_blank"><b>Gary Oldman</b></a> (George Smiley)<br /><a... (12 Replies)
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7. Shell Programming and Scripting
Hi I have something like this:
EXAMPLE 1
CREATE UNIQUE INDEX "STRING_1"."STRING_2" ON "BOSNI_CAB_EVENTO"
("CD_EVENTO" , "CD_EJECUCION" ) PCTFREE 10 INITRANS 2 MAXTRANS 255
STORAGE(INITIAL 5242880 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT)
TABLESPACE "DB1000_INDICES_512K"... (4 Replies)
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8. UNIX for Dummies Questions & Answers
I have these files in a directory. It may have more class than the sample below:
DEPT_CHEM101LEC_D_20110301.DAT
DEPT_CHEM101LAB_D_20110301.DAT
DEPT_BIO105LEC_D_20110325.DAT
DEPT_BIO105LAB_D_20110325.DAT
DEPT_CSC308LEC_D_20110327.DAT
DEPT_CSC308LAB_D_20110327.DAT
Is there way to extract out... (5 Replies)
Discussion started by: lv99
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9. Shell Programming and Scripting
Sample data:
revision001 | some text | some text
Comment: some comment
Brief: 1) brief
2) brief
------------------------------------------
revision002 | some text | some text
Brief: 1) brief
2) brief
FIX: some fix
------------------------------------------
revision003 | some... (8 Replies)
Discussion started by: inotech
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10. Shell Programming and Scripting
Hi,
This is my first post here - I'm hoping I can get some help! I have searched these forums and othersand not getting anything that works.
I am trying to extract a single file from a tar archive to a diffierent location than it will default to.
For example my tar log shows me ...
a... (3 Replies)
Discussion started by: littleIdiot
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)