File 1 contains a reference list of unique subscriber numbers ( 7 million entries in total)
File 2 contains a list of the subscriber numbers and their tariff (15 million entries in total). This file is in the production system and hasn't had old subscribers removed for some time so more than half of the entries need removed.
I created the following couple of lines to try to obtain the active 7 million subscriber numbers and tariffs from the behemoth 15 million list
While this is actually working, it's only producing around 20 entries per second, which will take days to complete.
I'm afraid I'm a complete noob and can't come up with anything more inventive. I'm sure awk/sed/perl or probably any other number of languages would be perfect for something like this.
I am trying to cat a file and then grep that file for a number. I can do it fine on other files but this particular file will not do anything. I tried running it on an older file from the same device but it is just not working. The file is nothing more than a flat file on a unix box. Here is just a... (3 Replies)
Hello,
So I sorted my file as I was supposed to:
sort -n -r -k 2 -k 1 file1 | uniq > file2
and when I wrote
> cat file2
in the command line, I got what I was expecting, but in the script itself
...
sort -n -r -k 2 -k 1 averages | uniq > temp
cat file2
It wrote a whole... (21 Replies)
Hi all,
I have a file like the following:
ID,
2,Andrew,0,1,2,3,4,2,5,6,7,7,9,3,4,5,34,3,2,1,5,6,78,89,8,7,6......................
4,James,0,6,7,0,5,6,4,7,8,9,6,46,6,3,2,5,6,87,0,341,0,5,2,5,6....................
END,
(there are more entires on each line but to keep it simple I've left... (10 Replies)
Hi all,
Here is my requirement
I have to search 'ORA' word in out.log file,if it is present then i need to send that file (out.log) content to some mail id.If 'ORA' word is not in that file then i need to send 'load succesful' message to some mail id.
The below the shell script is not... (5 Replies)
Hi All,
I'd like to do this
cat /etc/passwd
and grep -v on the /etc/shells list
I'd like to find all shell that doesn't exist on the /etc/passwd.
Is there an easy way without doing a egrep -v "/bin/sh|/bin/bash................"?
How do I use a file /etc/shells as my list for... (4 Replies)
I am not sure if using cat -n is the most efficient way to split a file into multiple files, one file per line in the source file.
I thought using cat -n would make it easy to process the file because it produces an output that numbers each line that I could then grep for with the regex "^ *$i".... (3 Replies)
Is there a way using grep or cat a file to create a new file based on whether the first 9 positions of each record is less than 399999999?
This is a fixed file format. (3 Replies)
Hello,
i need to search one word (snp1) from many files and copy the content of the columns of this word in new file.
example:
file 1:
SNP BP CHR P
snp1 1 3 0.01
snp2 2 2 0.05
.
.
file 2:
SNP BP CHR P
snp1 1 3 0.06
snp2 2 2 0.3
output... (6 Replies)
Hello
someone told me to use
OS=`awk '{print int($3)}' < /etc/redhat-release`
instead of
OS=cat /etc/redhat-release | `awk '{print int($3)}'`
any idea for the reason ? (5 Replies)
Hi Guys
This is my first post so I am not sure how things go here. I'm sorry if I'm breaking the rule or something. Feel free to correct me about that :)
So as I was saying...
I'd been trying to grep this folder containing 900,000 txt files but seems no luck. I get either "No such file... (6 Replies)
Discussion started by: Nexeu
6 Replies
LEARN ABOUT BSD
dcheck
DCHECK(8) System Manager's Manual DCHECK(8)NAME
dcheck - file system directory consistency check
SYNOPSIS
dcheck [ -i numbers ] [ filesystem ]
DESCRIPTION
Dcheck reads the directories in a file system and compares the link-count in each i-node with the number of directory entries by which it
is referenced. If the file system is not specified, a set of default file systems is checked.
The -i flag is followed by a list of i-numbers; when one of those i-numbers turns up in a directory, the number, the i-number of the direc-
tory, and the name of the entry are reported.
The program is fastest if the raw version of the special file is used, since the i-list is read in large chunks.
SEE ALSO filsys(5), clri(8), fsck(8), icheck(8), ncheck(8)DIAGNOSTICS
When a file turns up for which the link-count and the number of directory entries disagree, the relevant facts are reported. Allocated
files which have 0 link-count and no entries are also listed. The only dangerous situation occurs when there are more entries than links;
if entries are removed, so the link-count drops to 0, the remaining entries point to thin air. They should be removed. When there are
more links than entries, or there is an allocated file with neither links nor entries, some disk space may be lost but the situation will
not degenerate.
BUGS
Since dcheck is inherently two-pass in nature, extraneous diagnostics may be produced if applied to active file systems. Default file sys-
tems vary with installation so dcheck should use fstab(5).
3rd Berkeley DistributionDCHECK(8)