Version: 20140722
OS: Ubuntu 14.04.01 LTS,64bit
When I start a job using the following command 

cat *.lines | parallel -j-2 --eta --joblog log_file & 


Rscript ../Get_Length.R BM O1.ap > O1.ap.min
Rscript ../Get_Length.R BM O5.ap > O5.ap.min
....
are the commands in the *lines file
job immediatly stops and even after putting the job in background using "bg", 
it stops again. after "fg" the job resumes again. I also faced a problem while 
starting a nohup parallel job, as it does not run in background. (Same job with 
nohup)

Parallel runs smoothly with ampersend(in foreground). 

What am I missing here ? 

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