Above you can see the script, in its final version ...
I've made the basic tests and it passed...
Maybe this lock script - that uses only shell scripting - no files nor database tables are used - interests someone else...
Thanks again for all the help !
P.S. - if you'd like to test it, you just have to embed it in any test script you want... but put it as the first script block in the code
But I'm sending a full test script, with the testing script in its end...
Remember that you can test this running the script in background (using & added in the end of the command line) or using addition shells.
Code:
#!/bin/ksh
CUR_SHELL="/bin/ksh"
FIELD1="VAR1"
FIELD2="VAR2"
NUM_INST=0
GREP_PATTERN=$0
typeset -u OVERRIDE_PARM
OVERRIDE_PARM=$1 # a parameter to force the execution of the script - if its OVERRIDE, than the script must run anyway.
echo "$GREP_PATTERN" | grep './'
if [ $? -eq 0 ]; then
GREP_PATTERN=`echo $GREP_PATTERN | sed -e 's/.\///'`
fi
#echo "$1" | tr "[:lower:]" "[:upper:]" both methods work, but
#echo "$1" | sed -e 's/surpass/SURPASS/' using typeset doesn't require an extra process for this conversion
if [ "$OVERRIDE_PARM" != "OVERRIDE" ]; then
ps -e -o args | grep "$GREP_PATTERN" | tr -s " " | cut -d" " -f1,2 |
while read -r FIELD1 FIELD2
do
if [ "$FIELD1" = "$CUR_SHELL" ]; then
echo $FIELD2 | grep "$GREP_PATTERN"
if [ $? -eq 0 ]; then
NUM_INST=$NUM_INST+1
if [ $NUM_INST -gt 1 ]; then
echo "Error - Program is already running."
exit 1
fi
fi
fi
done
fi
function ()
{
echo "PARAMETER: $1"
sleep 60
}
function 1&
function 2&
wait
Dears,
I've written a script which allows me to send mails in different formats with different attaches. Now I still want to add a feature to this script. My users would like to be able to receive a "read" or "delivered" receipt for their mails.
The script send mails on behalve of an specific... (1 Reply)
In this post, Perderabo's script says
echo 05/06/25 14:15:56 | IFS=" /:" read Y1 M1 D1 h1 m1 s1
which, if I am not wrong, will break the input into Y1, M1 et al.
I tried the following in my code
#! /bin/ksh
# per.sh
typeset -R2 HOUR=00
typeset -R2 MIN=00
typeset -R2 SEC=00
... (2 Replies)
Hallo,
i need a Prompting read in my script:
read -p "Enter your command: " command
But i always get this Error:
-p: is not an identifier
When I run these in c-shell i get this error
/usr/bin/read: read: bad option(s)
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I have to read a file line by line, change it and then update the file. Problem is, when i read the file, "read" command ignores leading spaces.
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Hi All
I have a migration program that creates directories based on dates, e.g 20090714 20090812 etc.. Based on their requirements, the user will select the directory they want to perform an action on.
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#!/bin/bash
FILE=/etc/crontab
tail -5 $FILE
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read HOURS
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Hi,
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3G_CENTRAL;INDONESIA_(M)_TELKOMSEL;SPECIAL_WORLD_GRP_7_FA_2_TELKOMSEL
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I want to print any matching IP addresse in List1 with List 2;
List 1
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161.85.58.210
250.57.15.129
217.23.162.249
74.76.129.101
30.221.177.237
3.147.200.59
170.58.142.64
127.65.109.33
150.167.242.146
223.3.20.186
25.181.180.99
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Discussion started by: asjaiswal
2 Replies
LEARN ABOUT CENTOS
service
service(8) System Manager's Manual service(8)NAME
service - run a System V init script
SYNOPSIS
service SCRIPT COMMAND [OPTIONS]
service --status-all
service --help | -h | --version
DESCRIPTION
service runs a System V init script in as predictable environment as possible, removing most environment variables and with current working
directory set to /.
The SCRIPT parameter specifies a System V init script, located in /etc/init.d/SCRIPT. The supported values of COMMAND depend on the
invoked script, service passes COMMAND and OPTIONS it to the init script unmodified. All scripts should support at least the start and
stop commands. As a special case, if COMMAND is --full-restart, the script is run twice, first with the stop command, then with the start
command.
service --status-all runs all init scripts, in alphabetical order, with the status command.
If the init script file does not exist, the script tries to use legacy actions. If there is no suitable legacy action found and COMMAND is
one of actions specified in LSB Core Specification, input is redirected to the systemctl. Otherwise the command fails with return code 2.
FILES
/etc/init.d
The directory containing System V init scripts.
ENVIRONMENT
LANG, TERM
The only environment variables passed to the init scripts.
SEE ALSO chkconfig(8), ntsysv(8), systemd(1), systemctl(8), systemd.service(5)
Jan 2006 service(8)
11-19-2003
Job finished.
