Running a unix script(which is calling another script inside that) in background

Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Running a unix script(which is calling another script inside that) in background
# 1  
Old 11-05-2009
Running a unix script(which is calling another script inside that) in background

Hi all,

I am having a script ScriptA which is calling a script ScriptB in the same server and copying files to second server and have to execute one script ScriptC in the second server. THis First script ScriptA is the main script and i have to execute this process continously.
for Keeping this script as background how is it possible.?????
The Script A is having scp command and ScriptB is using SSH command and Script A is continously watching for events in ServerA. SO for running this continous looop which is using all these 3 scripts what is the method. I have tried nohup . but in that all the 3 scripts i have to do nohup ??? Crontab ?? i have tried but was not able to do the required result. i m using expect for sending password in scp and if i execute in background it is exiting and scripts are not functioning.

Please Help me out for solving this issue Unix Experts.

Thanking you all in advance


Rohith G
# 2  
Old 11-05-2009
Can u post your requirements and sample script . To help better we need to understand logic better.
# 3  
Old 11-06-2009
Running a unix script(which is calling another script inside that) in background

Hi ,

I have one main script called which contains the cotennts below. this script wil search for the existence of files in a particular directory and if one file is finidin it wil send to another server . this is the basic functionality
the is given below

#Al the directiory locations wil be mentinedin the first

# Trace output function
trace ()
if [ $TRACE ]
DATE=`date +"%Y-%m-%d %X"`
echo "$DATE: $1" >> $TRACEFILE

trace "Script $0 started"

# First find all alarm files to import at start
FILES="`find $ALARM_FILES_DIR -type f`"

# Loop forever and import files
while [ true ]
loop=`expr $loop + 1`

# cat the files to a text file
if [ "$FILES" != "" ]
trace "Alarm files to import:\n$FILES_SORTED"

for i in $FILES_SORTED
cat $i>export1.txt


expect -c "
# exp_internal 1 # uncomment for debugging

spawn /usr/bin/scp export1.txt ***@ipaddress:/location

expect {
"*password:*" { send $password\r\n; interact }
eof { exit }

rm -rf export1.txt


trace "No new alarm files to import"

trace "Latest alarm file imported: $LATEST"

# If the latest file sent still exists then find newer files, otherwise find all files
if [ -f "$LATEST" ]
FILES="`find $ALARM_FILES_DIR -newer $LATEST -type f`"
FILES="`find $ALARM_FILES_DIR -type f`"
# Modify sleep time (in seconds) as needed below
sleep 2


THIS SCRIPT WIL CALL THE SECOND SCRIPT CALLED SCRIPT.SH contents given below since expect cant used inside the first script i hav given like dat in dif script i mean /usr/bin/expect -f

#!/usr/local/bin/expect -f
spawn ssh ***@ipaddrss 'location/'
expect "password:"
send "netcool\n"

This wil call another script in server2 called contents are given below

cat export1.txt >> export.txt
rm export1.txt

I need to execute all these 3 scripts in crontab for copyn the files automatically.

I am really a beginner in scripting. I know some logical mismatch may be der . PLease correct me and help me out for solving this.


ROhith G
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Running script in background

Hi, I wrote a KSH script and running it on HP-UX machine I am running one script in background. My script is at location $HOME/myScript/test/background_sh When I view my script in background with psu commend > psu | grep background_sh I see following output UID PID PPID C ... (1 Reply)
Discussion started by: vaibhav
1 Replies

2. Shell Programming and Scripting

Calling one script inside another

Hi, I am calling a script from has below pice of code: IFILE=/home/home1/Report1.csv if awk -F, '$6==0 && $7==0{exit 1}' ${IFILE} then awk -F, ' BEGIN{ c=split("1,6,2,3,4,5,6", col) print "To:" print "Subject: Error... (2 Replies)
Discussion started by: Vivekit82
2 Replies

3. Shell Programming and Scripting

Shell Script for continuously checking status of a another script running in background, and immedia

Hi, I want to write a script which continuously checking status of a script running in background by nohup command. And if same script is not running then immediately start the script...please help.. i am using below command to run script nohup & but in some... (9 Replies)
Discussion started by: ketanraut
9 Replies

4. Shell Programming and Scripting

Problem in calling a script inside a script

Hi team, I have a script in different folder. Now i want to call that script and execute that script from that path alone. My code is #!/bin/bash wname=yahoo PATH='/opt/IBM' wac=`/usr/bin/ls $PATH | /usr/bin/grep "$wname"` STOP=`/usr/bin/find $PATH/$wac -type f -name ""`... (8 Replies)
Discussion started by: natraj005
8 Replies

5. Shell Programming and Scripting

running the script in background

I have a script called which I was running in the background but the problem is which I used the command :- ps -elf | grep "" | grep -v grep to find the process id but I was unable to find the process id for this script and when I checked from the front end the... (3 Replies)
Discussion started by: maitree
3 Replies

6. Shell Programming and Scripting

Problem running a program/script in the background from a script

Hi all, I have a script that calls another program/script, xxx, to run in the background. Supposedly this program at most should finish within five (5) minutes so after five (5) minutes, I run some other steps to run the script into completion. My problem is sometimes the program takes... (5 Replies)
Discussion started by: newbie_01
5 Replies

7. UNIX for Advanced & Expert Users

Running script in background

When I run the following snippet in background #!/bin/ksh while do echo "$i" sleep 10 i=`expr $i + 1` done My job got stopped and it says like + Stopped (SIGTTOU) ex1 & I did "stty tostop" as suggested in many of the post but still not working... (3 Replies)
Discussion started by: shahnazurs
3 Replies

8. UNIX for Dummies Questions & Answers

Running the Script in Background.

Gurus, Pls. help on this to run the script in background. I have a script to run the informatica workflows using PMCMD in script. Say the script name is & Parameters to the script is Y Y Y Y The no of parameters to the bove script is 4. all are going to be a flags. Each flag will... (2 Replies)
Discussion started by: prabhutkl
2 Replies

9. Shell Programming and Scripting

differences in calling another script inside script

Hello, we can call the script inside another script. like method 1) content of ######## . ####### method 2) content of ######## ####### What is the difference here in both samples calling i mean calling with ". " and calling... (1 Reply)
Discussion started by: balareddy
1 Replies

10. Shell Programming and Scripting

calling a C executable from inside a Perl script

here's the Perl code snippet... how can i call my C executable 'porter-stemmer' and pass it $1 as an argument? Thanks for the help! # Read through the original topic set, and modify based on the current # pre-processing options while (<TOPIC_ORIG>) { # Run pre-processing over only the... (3 Replies)
Discussion started by: mark_nsx
3 Replies
Login or Register to Ask a Question