Whats the meaning of this code Post: 302070271

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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...

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kill

KILL(1) 						    BSD General Commands Manual 						   KILL(1)

NAME

     kill -- terminate or signal a process

SYNOPSIS

     kill [-s signal_name] pid ...
     kill -l [exit_status]
     kill -signal_name pid ...
     kill -signal_number pid ...

DESCRIPTION

     The kill utility sends a signal to the processes specified by the pid operands.

     Only the super-user may send signals to other users' processes.

     The options are as follows:

     -s signal_name
	     A symbolic signal name specifying the signal to be sent instead of the default TERM.

     -l [exit_status]
	     If no operand is given, list the signal names; otherwise, write the signal name corresponding to exit_status.

     -signal_name
	     A symbolic signal name specifying the signal to be sent instead of the default TERM.

     -signal_number
	     A non-negative decimal integer, specifying the signal to be sent instead of the default TERM.

     The following PIDs have special meanings:

     -1      If superuser, broadcast the signal to all processes; otherwise broadcast to all processes belonging to the user.

     Some of the more commonly used signals:

     1	     HUP (hang up)
     2	     INT (interrupt)
     3	     QUIT (quit)
     6	     ABRT (abort)
     9	     KILL (non-catchable, non-ignorable kill)
     14      ALRM (alarm clock)
     15      TERM (software termination signal)

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

EXIT STATUS

     The kill utility exits 0 on success, and >0 if an error occurs.

EXAMPLES

     Terminate the processes with PIDs 142 and 157:

	   kill 142 157

     Send the hangup signal (SIGHUP) to the process with PID 507:

	   kill -s HUP 507

SEE ALSO

     builtin(1), csh(1), killall(1), ps(1), sh(1), kill(2), sigaction(2)

STANDARDS

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

HISTORY

     A kill command appeared in Version 3 AT&T UNIX.

BUGS

     A replacement for the command ``kill 0'' for csh(1) users should be provided.

BSD
								  April 28, 1995							       BSD

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting