I am facing some strange problem.
I know, there is only one record in a file 'test.txt' which starts with 'X'
I ensure that with following command,
awk /^X/ test.txt | wc -l
This gives me output = '1'.
Now I take out this record out of the file, as follows :
awk /^X/ test.txt >... (1 Reply)
Morning guys. Another day another question. :rolleyes:
I am knocking up a script to pull some data from a file. The problem is the file is very big (up to 1 gig in size), so this solution:
for results in `grep "^\
... works, but takes ages (we're talking minutes) to run. The data is held... (8 Replies)
Hi experts.
In one thread i have asked you how to grep the string from the below sample file-
Unfortunately the script did not gave proper output (it missed many strings). It happened may be i did gave you the proper contents of the file
That was the script-
"$ perl -00nle'print join... (13 Replies)
Hi,
I have a text file that is around 7Gb which is basically a matrix of numbers (FS is a space and RS is \n). I need the most efficient way of plucking out a number from a specified row and column in the file.
For example, for the value at row 15983, col 26332, I'm currently I'm using:
... (1 Reply)
Hi all,
I would like to compare a column in one file to a column in another file and when there is a match it prints the first column and the corresponding second column. Example
File1
ABA
ABC
ABE
ABF
File 2
ABA 123
ABB 124
ABD 125
ABC 126
So what I would like printed to a... (6 Replies)
INPUT SAMPLE
Symmetrix ID : 000192601507
Masking View Name : TS00P22_13E_1
Last updated at : 05:10:18 AM on Tue Mar 22,2011
Initiator Group Name : 10000000c960b9cd
Host Initiators
{
WWN : 10000000c960b9cd
}
Port Group Name :... (8 Replies)
Hello All,
Can you please help me with the below.
#!/bin/bash
ARR="No Differences In Stage Between HASH_TOTALS & HASH_TOTALS_COMP For UNINUM:0722075 PROVIDER:5 EXTRACT_DT:30-SEP-12 VER_NUM:1"
ARR="No Differences In Stage Between HASH_TOTALS & HASH_TOTALS_COMP For UNINUM:0722075 PROVIDER:5... (14 Replies)
this thread is a continuation from previous thread
https://www.unix.com/shell-programming-and-scripting/223901-split-big-file-into-multiple-files-based-first-four-characters.html
..I am using awk to split file and I have a syntax error while executing the below code
I am using AIX 7.2... (4 Replies)
Discussion started by: etldev
4 Replies
LEARN ABOUT HPUX
sum
sum(1) General Commands Manual sum(1)NAME
sum - print checksum and block or byte count of file(s)
SYNOPSIS
[file ...]
Remarks
is obsolescent and should not be used in new applications that are intended to be portable between systems. Use instead (see cksum(1)).
DESCRIPTION
calculates and prints to standard output a checksum for each named file, and also prints the size of the file in 512 byte blocks, rounded
up.
The default algorithm is a 16-bit sum of the bytes in which overflow is ignored. Alternate algorithms can be selected with the and
options.
Standard input is used if no file names are given.
is typically used to verify data integrity when copying files between systems.
Options
recognizes the following options:
Use an alternate algorithm in which the 16-bit sum is right rotated
with each byte in computing the checksum.
Use the 32-bit cyclical redundancy check (CRC) algorithm used by
RETURN VALUE
returns the following values upon completion:
All files were processed successfully.
One or more files could not be read or some other error occurred.
If an inaccessible file is encountered, continues processing any remaining files, but the final exit status is affected.
DIAGNOSTICS
Read error conditions are indistinguishable from end of file on most devices; check the block or byte count.
WARNINGS
This command is likely to be withdrawn from X/Open standards. Applications using this command might not be portable to other vendors'
platforms. The usage of cksum(1) is recommended.
SEE ALSO cksum(1), wc(1).
STANDARDS CONFORMANCE sum(1)