Hello experts,
I have a series issue in script that result with bad peformence and I wonder if you can assist me.
For example
I have two files:
File-New, size 15Mb.
File-Old, size 1Mb.
File-New content:
a
b
c
k
File-Old content:
d
f
a
b (0 Replies)
Hi,
I am running a BASH shell with the following script. The script works and gives me correct output but is very slow with large files. The more rows and columns (width and height) the slower as you can probably see.
How can I do what I want more efficiently? Any ideas welcome. It has been... (10 Replies)
I had written a perl script to compare two files: new and master and get the output of the first file i.e. the first file: words that are not in the master file
STRUCTURE OF THE TWO FILES
The first file is a series of names
ramesh
sushil
jonga
sudesh
lugdi
whereas the second file (could be... (4 Replies)
My script builds a lot of these array lists, then compares their sizes which solves my problem, but runs very slow. :(
set -A comboSorted -- $(
for x in ${IDs}
do
nawk -v s=$x '
BEGIN { testPattern="^" s "$" }
{
if ( $2 ~ testPattern ) {
getline;getline;
if ($1 == "IMAGE_SIZE")
print... (1 Reply)
Basically my requirement is to know the total number of free anonymous ports.
anonymous port range is 32768- 65535.
i wrote a script for that
**********************************************
for i in {32768..65535}
do
netstat -an | grep $i > /dev/null
if
... (21 Replies)
Hi
I know the basic about script and sleep processes.
However this is more tricky:
I would like to run
sh -x /sbin/dhclient-script and slow down the output of the script as a whole.
How would you do it?
I would like to delay output on the screen with 1 second for every line for the output... (3 Replies)
I have shell program as below
#!/bin/sh
echo ======= LogManageri start ==========
#This directory is getting the raw data from remote server
Raw_data=/opt/ftplogs
# This directory is ready for process the data
Processing_dir=/opt/processing_dir
# This directory is prcoessed files and... (4 Replies)
Hello,
I am showing the start of my script.
I am finding that 'xmessage' is taking about 12-15 seconds to show.
This in a terminal is very quick '/opt/vc/bin/vcgencmd get_camera'.
Is there any way to get 'camera not detected' to show faster.
Regards
#!/bin/bash
s=$(/opt/vc/bin/vcgencmd... (4 Replies)
I'm new to utilities like socat and netcat and I'm not clear if they will do what I need.
I have a "compileDeployStartWebServer.sh" script and a "StartBrowser.sh" script that are started by emacs/elisp at the same time in two different processes.
I'm using Cygwin bash on Windows 10.
My... (3 Replies)
Discussion started by: siegfried
3 Replies
LEARN ABOUT MOJAVE
uniq
UNIQ(1) BSD General Commands Manual UNIQ(1)NAME
uniq -- report or filter out repeated lines in a file
SYNOPSIS
uniq [-c | -d | -u] [-i] [-f num] [-s chars] [input_file [output_file]]
DESCRIPTION
The uniq utility reads the specified input_file comparing adjacent lines, and writes a copy of each unique input line to the output_file. If
input_file is a single dash ('-') or absent, the standard input is read. If output_file is absent, standard output is used for output. The
second and succeeding copies of identical adjacent input lines are not written. Repeated lines in the input will not be detected if they are
not adjacent, so it may be necessary to sort the files first.
The following options are available:
-c Precede each output line with the count of the number of times the line occurred in the input, followed by a single space.
-d Only output lines that are repeated in the input.
-f num Ignore the first num fields in each input line when doing comparisons. A field is a string of non-blank characters separated from
adjacent fields by blanks. Field numbers are one based, i.e., the first field is field one.
-s chars
Ignore the first chars characters in each input line when doing comparisons. If specified in conjunction with the -f option, the
first chars characters after the first num fields will be ignored. Character numbers are one based, i.e., the first character is
character one.
-u Only output lines that are not repeated in the input.
-i Case insensitive comparison of lines.
ENVIRONMENT
The LANG, LC_ALL, LC_COLLATE and LC_CTYPE environment variables affect the execution of uniq as described in environ(7).
EXIT STATUS
The uniq utility exits 0 on success, and >0 if an error occurs.
COMPATIBILITY
The historic +number and -number options have been deprecated but are still supported in this implementation.
SEE ALSO sort(1)STANDARDS
The uniq utility conforms to IEEE Std 1003.1-2001 (``POSIX.1'') as amended by Cor. 1-2002.
HISTORY
A uniq command appeared in Version 3 AT&T UNIX.
BSD December 17, 2009 BSD