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Introduction to Linux - A Hands on Guide
This guide was created as an overview of the Linux Operating System, geared toward new users as an exploration tour and getting started guide, with exercises at the end of each chapter.
For more advanced trainees it can be a desktop reference, and a collection of the base knowledge needed to proceed with system and network administration. This book contains many real life examples derived from the author's experience as a Linux system and network administrator, trainer and consultant. They hope these examples will help you to get a better understanding of the Linux system and that you feel encouraged to try out things on your own.
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[zillur@genomics sge]$ service sgeexec.p6444 stop && sgeexec.p6444 start
Redirecting to /bin/systemctl stop sgeexec.p6444.service
Failed to stop sgeexec.p6444.service: Unit sgeexec.p6444.service not loaded.
[zillur@genomics sge]$ for p in $(rpm -qa | grep gridengine); do
> rpm -ql $p | grep service
> done
/opt/sge/util/rctemplates/systemd/sgeexecd.service
/opt/sge/util/rctemplates/systemd/sgemaster.service
/opt/sge/util/rctemplates/systemd/sgeshadowd.service
[zillur@genomics ~]$ echo "PATH=$PATH;/opt/sge/bin/lx-amd64/" >> /home/zillur/.bash_profile
[zillur@genomics ~]$ logout
Connection to 136.145.231.38 closed.
MacBook-Pro-55:final_project ZILLURRAHMAN$ sudo ssh zillur@136.145.231.38
zillur@136.145.231.38's password:
Last login: Sat Dec 31 01:15:02 2016 from 67.224.154.165
-bash: /opt/sge/bin/lx-amd64/: Is a directory
[zillur@genomics ~]$ qsub
bash: qsub: command not found...
[zillur@genomics ~]$ systemctl start sgemaster
==== AUTHENTICATING FOR org.freedesktop.systemd1.manage-units ===
Authentication is required to manage system services or units.
Authenticating as: Zillur (zillur)
Password:
==== AUTHENTICATION COMPLETE ===
Failed to start sgemaster.service: Unit not found.
[zillur@genomics ~]$ systemctl status sgemaster
Unit sgemaster.service could not be found.
Then again:
Code:
[zillur@genomics ~]$ echo "PATH=$PATH;/opt/sge/bin/lx-amd64/" >> /etc/environment
-bash: /etc/environment: Permission denied
[zillur@genomics ~]$ sudo echo "PATH=$PATH;/opt/sge/bin/lx-amd64/" >> /etc/environment
-bash: /etc/environment: Permission denied
[zillur@genomics ~]$ sudo echo "PATH=$PATH;/opt/sge/bin/lx-amd64/" >> /etc/environment
-bash: /etc/environment: Permission denied
[zillur@genomics ~]$ su
Password:
[root@genomics zillur]# echo "PATH=$PATH;/opt/sge/bin/lx-amd64/" >> /etc/environment
[root@genomics zillur]# exit
exit
[zillur@genomics ~]$ logout
Connection to 136.145.231.38 closed.
MacBook-Pro-55:final_project ZILLURRAHMAN$ sudo ssh zillur@136.145.231.38
zillur@136.145.231.38's password:
Last login: Sat Dec 31 01:16:36 2016 from 67.224.154.165
-bash: /opt/sge/bin/lx-amd64/: Is a directory
[zillur@genomics ~]$ qsub
bash: qsub: command not found...
[zillur@genomics ~]$ systemctl start sgemaster
==== AUTHENTICATING FOR org.freedesktop.systemd1.manage-units ===
Authentication is required to manage system services or units.
Authenticating as: Zillur (zillur)
Password:
==== AUTHENTICATION COMPLETE ===
Failed to start sgemaster.service: Unit not found.
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