You could look into using grep instead of the second for loop. I probably would be more efficient then a shell for loop, and it would help eliminate a few lines.
Hi,
I have this following script below. Its searching a log file for 2 string and if found then write the strings to success.txt and If not found write strings to failed.txt . if one found and not other...then write found to success.txt and not found to failed.txt.
I want to optimize this... (3 Replies)
can we optimize this command ?
sed 's#AAAA##g' /study/i.txt | sed '1,2d' | tr -d '\n\' > /study/i1.txt;
as here i am using two files ...its overhead..can we optimise to use only 1 file
sed 's#AAAA##g' /study/i.txt | sed '1,2d' | tr -d '\n\' > /study/i.txt;
keeping them same but it... (9 Replies)
#!/usr/bin/perl
use strict;
use warnings;
use Date::Manip;
my $date_converted = UnixDate(ParseDate("3 days ago"),"%e/%h/%Y");
open FILE,">$ARGV";
while(<DATA>){
my @tab_delimited_array = split(/\t/,$_);
$tab_delimited_array =~ s/^\ =~ s/^\-//;
my $converted_date =... (2 Replies)
Hi,
I have to assign a value for a varaiable based on a Input. I have written the below code:
if
then
nf=65
elif
then
nf=46
elif
then
nf=164
elif
then
nf=545
elif
then
nf=56
elif
then (3 Replies)
Here is my code. What it does is it reads an input file (input.txt which contains roughly 2,000 search phrases) and searches a directory for files that contains the search phrase. The directory contains roughly 1900 files and 84 subdirectories. The output is a file (output.txt) that shows only the... (23 Replies)
Hello,
I'm wondering if there is a quicker way of doing this.
Here is my mv script.
d=/conversion/program/out
cd $d
ls $d > /home/tempuser/$$tmp
while read line ; do
a=`echo $line|cut -c1-5|sed "s/_//g"`
b=`echo $line|cut -c16-21`
if ;then mkdir... (13 Replies)
Hi guys,
I feel a bit comfortable now doing bash scripting but I am worried that the way I do it is not optimized and I can do much better as to how I code.
e.g.
I have a whole line in a file from which I want to extract some values.
Right now what I am doing is :
STATE=`cat... (5 Replies)
Hi All,
I have written a new script to check for DB space and size of dump log file before it can be imported into a Oracle DB.
I'm relatively new to shell scripting.
Please help me optimize this script further. (0 Replies)
Discussion started by: narayanv
0 Replies
LEARN ABOUT SUSE
su
SU(1) User Commands SU(1)NAME
su - run a shell with substitute user and group IDs
SYNOPSIS
su [OPTION]... [-] [USER [ARG]...]
DESCRIPTION
Change the effective user id and group id to that of USER.
-, -l, --login
make the shell a login shell
-c, --command=COMMAND
pass a single COMMAND to the shell with -c
-f, --fast
pass -f to the shell (for csh or tcsh)
-m, --preserve-environment
do not reset environment variables
-p same as -m
-s, --shell=SHELL
run SHELL if /etc/shells allows it
--help display this help and exit
--version
output version information and exit
A mere - implies -l. If USER not given, assume root.
AUTHOR
Written by David MacKenzie.
REPORTING BUGS
Report su bugs to bug-coreutils@gnu.org
GNU coreutils home page: <http://www.gnu.org/software/coreutils/>
General help using GNU software: <http://www.gnu.org/gethelp/>
COPYRIGHT
Copyright (C) 2009 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.
SEE ALSO
The full documentation for su is maintained as a Texinfo manual. If the info and su programs are properly installed at your site, the com-
mand
info coreutils 'su invocation'
should give you access to the complete manual.
GNU coreutils 7.1 July 2010 SU(1)