sed script to remove nth characters from end of filename
Hi all,
I have this basic script to remove, in this case 9 characters from the end of a file name. This is what I have so far,
The problem is that it removes the file extension as well.
Input:
HTML Code:
nameofmoveotherinfo.mov
Actual Output:
HTML Code:
nameofmovieoth
Required Output:
HTML Code:
nameofmovie.mov
Is there a way that the script leaves the file extension but deletes the nine characters before it? Also note that the name of the movie will always be different lengths but the other info (that needs to be deleted) will always be the same length (in this case nine characters).
Hi All,
I have named a file with current date,time and year as follows:
month=`date | awk '{print $2}'`
date=`date | awk '{print $3}'`
year=`date | awk '{print $6}'`
time=`date +%Hh_%Mm_%Ss'`
filename="test_"$month"_"$date"_"$year"_"$time".txt"
> $filename
The file is created with a... (2 Replies)
hi:
i have several thousand files from users and of course they use all kind of characters on filenames. I have things like:
My special report (1999 ) Lisa & Jack's work.doc
crazy.
How do I remove all this characters in the current dir and subdirs too?
Thanks. (3 Replies)
Hi all,
I am trying to write a script that will delete a certain amount of text from the end of a filename.
For example.
Input:
name of file (more text).pdf
Output:
name of file.pdf
So is it possible to write a script the deletes, in this example twelve (12) digits from the end... (6 Replies)
I am trying to analyse a large file of sequencing data, example of first 10 lines below,
@HWUSI-EAS656_0044_FC:7:1:2447:1039#GCAATT/1
GNCTATGGCTTGCCGGGCTCAGGGAAGACAATCATAGCCATGAAAATCATGGAAAAGATCAGAAAAACATTTCAA
+HWUSI-EAS656_0044_FC:7:1:2447:1039#GCAATT/1... (1 Reply)
Hi,
I am new to Sed and would like to know if it is possible to remove the characters .
I have a couple of files with a keyword and would like to remove the substring.
I am Using sed s/// but Its not working
Thanks for your Support
Andrew Borg (2 Replies)
Hi all.. I have several unique files that contain one thing in common, and that is acct#. For all files in the directory, I want to append the 10 characters following the word "ACCOUNT:" to the end of the filename.
for example:
I have file 111_123 that contains ACCOUNT:ABC1234567
The file... (5 Replies)
Hello.
The token is any printable characters between 2 " .
The token is unknown, but we know that it is between 2 "
Tok 1 : "1234x567"
Tok 2 : "A3b6+None"
Tok 3 : "A3b6!1234=@"
The ligne is :
Line 1 :
"9876xABCDE"Do you have any code fragments or data samples in your post
Line 2 : ... (3 Replies)
Hi All!
Please can someone help, I have a dir with the following files:
~-rw-r--r-- 1 emmuser users 2087361 Oct 16 15:50 MPGGSN02_20131007234519_24291.20131007
-rw-r--r-- 1 emmuser users 2086837 Oct 16 15:50 MPGGSN02_20131007233529_24272.20131007
-rw-r--r-- 1 emmuser ... (7 Replies)
how can i remove numbers of characters from the last name of file with respect to not remove the files extension
example
VFX_Official_Trailer_(HD)__Shhh__-_by_Freddy_Chavez_Olmos_&_Shervin_Shoghian-.mp4
i want to rename this to
VFX-Official-Trailer-(HD)-Shhh... (13 Replies)
Hi,
I hope you can help me out please?
I need to replace from character 8-16 with AAAAAAAA and the rest should stay the same after character 16
gtwrhtrd11111111rjytwyejtyjejetjyetgeaEHT
wrehrhw22222222hytekutkyukrylryilruilrGEQTH
hrwjyety33333333gtrhwrjrgkreglqeriugn;RUGNEURGU
... (4 Replies)
Discussion started by: stinkefisch
4 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)