Hi,
I have a simple perl script where I am passing array of gziped files to the while loop and trying to read content of each field one line at the time using gzcat. Yet, I can not get it to work
Here is what I am doing
...
while ($filename=shift) {
open(MYFILE, "| gzcat $filename");
... (2 Replies)
I'm looking to write a script where i look in a file called files.txt. This file has a list of other files in there.
I want the script to be able to look at this files.txt and go off and find the files that are listed in another directory.
I am doing it this way as filenames change week in... (1 Reply)
Hi, I have 2 files
file 1
----
10013 This is a text
10014 This is a test
10015 This is a temp
file 2
----
10013 010014737 ADSM 1300004 E
10014 020012323 ABCD 1718888 E
10015 030121212 ADSW 1290991 E
need to compare column1 in... (2 Replies)
hi
i have two files
cat input.txt
123456| 43256
456482|5893242
cat data.txt
xv 123456 abcd dsk
sd 123456 afsfn dd
df 43256 asdf ff
ss 456482 aa
sf 5893242 ff ff
aa 5893242 aa aa
i need to read inputs from input.txt and find data for data.txt.
then i need to print them as a... (2 Replies)
Okay, so I've looked on here and found some similar things, but not exactly what I am looking for. I am working on creating a script that can back up some files, based on the contents of another file - the configuration file.
First file contains the files to back up - we'll call this... (1 Reply)
Hello
I have a requirement where i have to loop through certain directory which will have multiple files. After looping through i have to make a list of file names exisitng in the directory and write them to a sequental file and each file should be delimited by ^%^
i.e If i have 3 files A,... (3 Replies)
hi,
Is it possible to read and compare 2 files which have different Field separators at the same time using awk???
file1:
1,dayal,maruti,Z-234,bangalore,KA,........
2,yash,esteem,Y-007,delhi,DL,...........
.
.
.
fill 2:
Z-234|Registered|Bangalore
Y-007|Registered|Bangalore
.
.
.
... (2 Replies)
Hi All,
Request your expertise in tackling one requirement in my project,(i dont have much expertise in Shell Scripting). The requirement is as below,
1) We store the last run date of a process in a file. When the batch run the next time, it should read this file, get the last run date from... (1 Reply)
Discussion started by: dsfreddie
1 Replies
LEARN ABOUT DEBIAN
bup-midx
bup-midx(1) General Commands Manual bup-midx(1)NAME
bup-midx - create a multi-index (.midx) file from several .idx files
SYNOPSIS
bup midx [-o outfile] <-a|-f|idxnames...>
DESCRIPTION
bup midx creates a multi-index (.midx) file from one or more git pack index (.idx) files.
Note: you should no longer need to run this command by hand. It gets run automatically by bup-save(1) and similar commands.
OPTIONS -o, --output=filename.midx
use the given output filename for the .midx file. Default is auto-generated.
-a, --auto
automatically generate new .midx files for any .idx files where it would be appropriate.
-f, --force
force generation of a single new .midx file containing all your This will result in the fastest backup performance, but may take a
long time to run.
--dir=packdir
specify the directory containing the .idx/.midx files to work with. The default is $BUP_DIR/objects/pack and $BUP_DIR/indexcache/*.
--max-files
maximum number of .idx files to open at a time. You can use this if you have an especially small number of file descriptors avail-
able, so that midx can complete (though possibly non-optimally) even if it can't open all your .idx files at once. The default
value of this option should be fine for most people.
--check
validate a .midx file by ensuring that all objects in its contained .idx files exist inside the .midx. May be useful for debugging.
EXAMPLE
$ bup midx -a
Merging 21 indexes (2278559 objects).
Table size: 524288 (17 bits)
Reading indexes: 100.00% (2278559/2278559), done.
midx-b66d7c9afc4396187218f2936a87b865cf342672.midx
DISCUSSION
By default, bup uses git-formatted pack files, which consist of a pack file (containing objects) and an idx file (containing a sorted list
of object names and their offsets in the .pack file).
Normal idx files are convenient because it means you can use git(1) to access your backup datasets. However, idx files can get slow when
you have a lot of very large packs (which git typically doesn't have, but bup often does).
bup .midx files consist of a single sorted list of all the objects contained in all the .pack files it references. This list can be binary
searched in about log2(m) steps, where m is the total number of objects.
To further speed up the search, midx files also have a variable-sized fanout table that reduces the first n steps of the binary search.
With the help of this fanout table, bup can narrow down which page of the midx file a given object id would be in (if it exists) with a
single lookup. Thus, typical searches will only need to swap in two pages: one for the fanout table, and one for the object id.
midx files are most useful when creating new backups, since searching for a nonexistent object in the repository necessarily requires
searching through all the index files to ensure that it does not exist. (Searching for objects that do exist can be optimized; for exam-
ple, consecutive objects are often stored in the same pack, so we can search that one first using an MRU algorithm.)
SEE ALSO bup-save(1), bup-margin(1), bup-memtest(1)BUP
Part of the bup(1) suite.
AUTHORS
Avery Pennarun <apenwarr@gmail.com>.
Bup unknown-bup-midx(1)