06-27-2007
Meaning of code
Hi
Can anybody tell me what is the meaning of the following code?
i=4 j=1 k=0
[ $i -o $j -o $k ]Specialy meaning of this line
echo $?
[ $i -a $j -a $k ]Specialy meaning of this line
echo $?
[ $i -a $j -o $k ]Specialy meaning of this line
echo $?
Thanks in advance
Sas
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi all,
I am unable interpret this code .........
nohup $OPSSHLPATH/mkt_sas_load_cic.sh $db_name $process_id $loc_mm > $OPSLSTPATH/mkt_sas_load_cic.out &
Thanks ....In advance (7 Replies)
Discussion started by: dhananjaysk
7 Replies
2. AIX
. ${0%${0##*/}}Script_Name
if i issue this command, it is executing the script. can any one tell what is the meaning of ${0%${0##*/}} (7 Replies)
Discussion started by: nyelavarthy
7 Replies
3. Shell Programming and Scripting
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 (2 Replies)
Discussion started by: santosh1234
2 Replies
4. UNIX for Dummies Questions & Answers
can some one please tell the meaning of the second statement i.e
n=${m#*=}
i couldnt get the meaning of the #*=
1.) m="mohit=/c/main/issue"
echo $m
result
-----------
mohit=/c/main/issue
2.) n=${m#*=}
echo $n
RESULT
-------
/c/main/issue (1 Reply)
Discussion started by: narang.mohit
1 Replies
5. Shell Programming and Scripting
Hi,
Can somebody tell the usage of "$_"
cd $_ ?
and ls $_ ? (4 Replies)
Discussion started by: giri_luck
4 Replies
6. Shell Programming and Scripting
can someone please tell what !* means in shell syntax.
Regards, (3 Replies)
Discussion started by: busyboy
3 Replies
7. Shell Programming and Scripting
Hi ,
Can anyone please let me know whta the follwoing piece of code for
ScriptName=${0##*/}
if pgrep -f "$ScriptName" | grep -v "^$$\$" ; then
echo `date`": Sctipt $ScritName is already runnig"
exit
fi
Thnx a lot in advance
Please use code tags when posting data and code... (8 Replies)
Discussion started by: Pratik4891
8 Replies
8. UNIX for Dummies Questions & Answers
Hi all,
I wanna know the meaning of the last word "<<! "
sudo su - user <<!
please help on this !!!! (1 Reply)
Discussion started by: sudharson
1 Replies
9. Shell Programming and Scripting
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... (1 Reply)
Discussion started by: adisky123
1 Replies
10. Shell Programming and Scripting
Hello everyone,
I'm looking for the meaning of this expression, as I don't understand it quite clearly : $1^
What do you think it could be?
I thought either:
- match lines starting with argument 1 but it should be ^$1
- turn line around : word becomes drow
Thanks in advance for your... (4 Replies)
Discussion started by: bibelo
4 Replies
ECHO(1) User Commands ECHO(1)
NAME
echo - display a line of text
SYNOPSIS
echo [SHORT-OPTION]... [STRING]...
echo LONG-OPTION
DESCRIPTION
Echo the STRING(s) to standard output.
-n do not output the trailing newline
-e enable interpretation of backslash escapes
-E disable interpretation of backslash escapes (default)
--help display this help and exit
--version
output version information and exit
If -e is in effect, the following sequences are recognized:
NNN the character whose ASCII code is NNN (octal)
\ backslash
a alert (BEL)
backspace
c produce no further output
f form feed
new line
carriage return
horizontal tab
v vertical tab
NOTE: your shell may have its own version of echo, which usually supersedes the version described here. Please refer to your shell's docu-
mentation for details about the options it supports.
AUTHOR
Written by Brian Fox and Chet Ramey.
REPORTING BUGS
Report echo 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 echo is maintained as a Texinfo manual. If the info and echo programs are properly installed at your site, the
command
info coreutils 'echo invocation'
should give you access to the complete manual.
GNU coreutils 7.1 July 2010 ECHO(1)