Whats the meaning of this code Post: 302068669

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1. Shell Programming and Scripting

Whats the meaning

What the folowing statements means and whats the use of it ? expr $db_name + 2 >/dev/null 2>&1 Thanks.

2. Shell Programming and Scripting

Hi Can anybody tell me what is the meaning of the following code? i=4 j=1 k=0 Specialy meaning of this line echo $? Specialy meaning of this line echo $? Specialy meaning of this line echo $? Thanks in advance Sas

3. Shell Programming and Scripting

whats wrong with this code

ls -ld | grep $1 /etc/passwd | cut -d: -f6 i need see the content...

4. Shell Programming and Scripting

##*_ - whats this?

Hi all, could you please tell me whats this stands ##*_ 0##*/ i knew this alone if some more is there please tell me that also.

5. Shell Programming and Scripting

can any one explain the meaning of the below code ?

while getopts :g:l:h: KEY $* do case $KEY in g) NAME=$OPTARG ;; l) LAB=$OPTARG ;; h) HD=$OPTARG ;; *) echo "Illegal option: $OPTARG" echo "$usage" exitStatus=1 exitGrace esac done

6. Shell Programming and Scripting

whats wrong in my code

Code: #!/usr/bin/perl -w use strict; use warnings; #Clears Screen $CLEAR=`clear`; print $CLEAR; i get the below error: Global symbol "$CLEAR" requires explicit package name at ./mutmg.pl line 6. Global symbol "$CLEAR" requires explicit package name at ./mutmg.pl line 7.

7. Shell Programming and Scripting

Whats wrong With This Code

Hi , iam new with sed command D:\bfx_db>sed -ne '/^SP2-*:/S/^\<.*\.*\>$/\2\p' reg.sql >>D:\out.log The filename, directory name, or volume label syntax is incorrect. Here my source file is reg.sql , i need the output in out.log Can anybody Help on this????

8. Shell Programming and Scripting

whats error in code ??

if `egrep -c "safe_mode" /usr/local/lib/php.ini` - gt 0 && " `egrep -c "safe_mode" /usr/local/lib/php.ini` = "On" " then echo " Good " exit else echo " Not Good "; fi and

9. Shell Programming and Scripting

Whats the meaning of set -e inside the script

Hi, I would like to ask about the meaning or purpose of set -e in the script bash, Does it mean if a wrong command in the script it will close or exit the script without continuation thats what happen if i set it in the terminal. Thanks in advance

10. Shell Programming and Scripting

What is the meaning of the following Perl Code?

Hi All Can any one please help me to understand the below Perl Code package Win32::File; # # File.pm # Written by Douglas_Lankshear@ActiveWare.com # # subsequent hacks: # Gurusamy Sarathy # $VERSION = '0.06'; require Exporter; require DynaLoader; @ISA= qw( Exporter...

LEARN ABOUT X11R4

nohup

NOHUP(1)							   User Commands							  NOHUP(1)

NAME

       nohup - run a command immune to hangups, with output to a non-tty

SYNOPSIS

       nohup COMMAND [ARG]...
       nohup OPTION

DESCRIPTION

       Run COMMAND, ignoring hangup signals.

       --help display this help and exit

       --version
	      output version information and exit

       If  standard  input  is a terminal, redirect it from an unreadable file.  If standard output is a terminal, append output to 'nohup.out' if
       possible, '$HOME/nohup.out' otherwise.  If standard error is a terminal, redirect it to standard output.   To  save  output  to	FILE,  use
       'nohup COMMAND > FILE'.

       NOTE: your shell may have its own version of nohup, which usually supersedes the version described here.  Please refer to your shell's doc-
       umentation for details about the options it supports.

AUTHOR

       Written by Jim Meyering.

REPORTING BUGS

       GNU coreutils online help: <http://www.gnu.org/software/coreutils/>
       Report nohup translation bugs to <http://translationproject.org/team/>

COPYRIGHT

       Copyright (C) 2017 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

       Full documentation at: <http://www.gnu.org/software/coreutils/nohup>
       or available locally via: info '(coreutils) nohup invocation'

GNU coreutils 8.28						   January 2018 							  NOHUP(1)

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting