Whats the meaning of this code Post: 302070274

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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 OSX

nohup

NOHUP(1)						    BSD General Commands Manual 						  NOHUP(1)

NAME

     nohup -- invoke a utility immune to hangups

SYNOPSIS

     nohup [--] utility [arguments]

DESCRIPTION

     The nohup utility invokes utility with its arguments and at this time sets the signal SIGHUP to be ignored.  If the standard output is a ter-
     minal, the standard output is appended to the file nohup.out in the current directory.  If standard error is a terminal, it is directed to
     the same place as the standard output.

     Some shells may provide a builtin nohup command which is similar or identical to this utility.  Consult the builtin(1) manual page.

ENVIRONMENT

     The following variables are utilized by nohup:

     HOME  If the output file nohup.out cannot be created in the current directory, the nohup utility uses the directory named by HOME to create
	   the file.

     PATH  Used to locate the requested utility if the name contains no '/' characters.

EXIT STATUS

     The nohup utility exits with one of the following values:

     126     The utility was found, but could not be invoked.

     127     The utility could not be found or an error occurred in nohup.

     Otherwise, the exit status of nohup will be that of utility.

SEE ALSO

     builtin(1), csh(1), signal(3)

STANDARDS

     The nohup utility is expected to be IEEE Std 1003.2 (``POSIX.2'') compatible.

BUGS

     Two or more instances of nohup can append to the same file, which makes for a confusing output.

BSD
								   July 19, 2001							       BSD

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting