Useful Scripts for Overworked Administrators
By Mark Prager, May 13, 2004
I work for a startup company, which means we face the usual problems of financing. Because many automated system tools are very expensive, I have written several scripts to help automate some of my daily tasks that monitor our system. I write these scripts in ksh and csh, and, where necessary, a few small C programs because these seem to be the least complicated. The C programs were compiled with gcc. Similarly, the scripts usually come out self-documenting, which means I can leave them running and return to them several months later and still understand what I was trying to do. Also, the scripts run under Solaris 2.5.1-7.0, and can easily be used on other UNIX operating systems.
Figure 1 Example letter
Hi [email protected]
You have 66 processess on host medusa
your limit is 35 processes.
Here is the list of your processes:
-+- 00001 root /etc/init -rs
|-+- 00206 root /usr/sbin/inetd -s
| |-+- 22611 root in.rlogind
| | \-+- 22614 mark.prager -tcsh
| | \--- 12208 mark.prager telnet 172.30.110.5
| \-+- 00122 root in.rlogind
| \-+- 00125 mark.prager -tcsh
| \--- 29988 mark.prager telnet 172.30.70.1
|-+- 00362 root /usr/dt/bin/dtlogin -daemon
| |-+- 12170 root /usr/dt/bin/dtlogin -daemon
| | \-+- 12194 mark.prager /bin/ksh /usr/dt/bin/Xsession
| | \-+- 12235 mark.prager /usr/dt/bin/sdt_shell -c unsetenv _ PWD; ; unsetenv DT; s
| | \-+- 12238 mark.prager tcsh -c unsetenv _ PWD; ; unsetenv DT; setenv DISPLAY 172
| | \-+- 12254 mark.prager /usr/dt/bin/dtsession
| | |-+- 12261 mark.prager dtterm -session dta00125 -sdtserver
| | | |--- 12299 mark.prager /usr/bin/tcsh
| | | |--- 12319 mark.prager /usr/bin/tcsh
| | | \--- 12339 mark.prager /usr/bin/tcsh
| | |-+- 12260 mark.prager dtwm
| | | \-+- 00118 mark.prager /usr/dt/bin/dtterm -name medusa -e rsh medusa
| | | \-+- 00120 mark.prager rlogin medusa
| | | \--- 00124 mark.prager rlogin medusa
| | |-+- 12264 mark.prager xemacs Makefile
| | | \--- 12369 mark.prager /usr/bin/tcsh -i
| | |-+- 12268 mark.prager /usr/dt/bin/dtterm -session dta000aK -name dolphin -e rsh dolphin
| | | \-+- 12298 mark.prager rlogin dolphin
| | | \--- 12343 mark.prager rlogin dolphin
| | |-+- 12269 mark.prager xterm -ls -sl 500 -sb -display 172.30.31.240:0 -e cleartool setview kfira_PCC_S
| | | \--- 12272 mark.prager tcsh
| | |-+- 12270 mark.prager xemacs /eng_opr/SwDnld/RMTConfig
| | | \--- 12373 mark.prager /usr/bin/tcsh -i
| | \-+- 12271 mark.prager xemacs /eng_opr/SwDnld/RMTConfig/DebugSVCBugFix.Cnf
| | \--- 12377 mark.prager /usr/bin/tcsh -i
| \-+- 19849 root /usr/dt/bin/dtlogin -daemon
| \-+- 19873 mark.prager /bin/ksh /usr/dt/bin/Xsession
| \-+- 19912 mark.prager /usr/dt/bin/sdt_shell -c unsetenv _ PWD; ; unsetenv DT; s
| \-+- 19915 mark.prager tcsh -c unsetenv _ PWD; ; unsetenv DT; setenv DISPLAY yun
| \-+- 19933 mark.prager /usr/dt/bin/dtsession
| |-+- 19946 mark.prager xemacs Makefile
| | \--- 20057 mark.prager /usr/bin/tcsh -i
| |-+- 19943 mark.prager dtterm -session dta00125 -sdtserver
| | |--- 19993 mark.prager /usr/bin/tcsh
| | |--- 20017 mark.prager /usr/bin/tcsh
| | \--- 20014 mark.prager /usr/bin/tcsh
| |-+- 19939 mark.prager dtwm
| | \-+- 22607 mark.prager /usr/dt/bin/dtterm -name medusa -e rsh medusa
| | \-+- 22609 mark.prager rlogin medusa
| | \--- 22613 mark.prager rlogin medusa
| |-+- 19950 mark.prager /usr/dt/bin/dtterm -session dta000aK -name dolphin -e rsh dolphin
| | \-+- 19974 mark.prager rlogin dolphin
| | \--- 19998 mark.prager rlogin dolphin
| |-+- 19951 mark.prager xterm -ls -sl 500 -sb -display 172.30.31.240:0 -e cleartool setview kfira_PCC_S
| | \--- 19954 mark.prager tcsh
| |-+- 19952 mark.prager xemacs /eng_opr/SwDnld/RMTConfig
| | \--- 20054 mark.prager /usr/bin/tcsh -i
| \-+- 19953 mark.prager xemacs /eng_opr/SwDnld/RMTConfig/DebugSVCBugFix.Cnf
| \--- 20055 mark.prager /usr/bin/tcsh -i
|--- 12237 mark.prager /usr/dt/bin/dsdm
|--- 12253 mark.prager /usr/dt/bin/ttsession
|-+- 13844 mark.prager xterm -ls -sl 500 -sb -display 172.30.31.240:0 -e cleartool setview jacky_SVC_4
| \--- 13845 mark.prager tcsh
|-+- 13870 mark.prager xterm -ls -sl 500 -sb -display 172.30.31.240:0 -e cleartool setview jacky_SVC_4
| \-+- 13871 mark.prager tcsh
| \-+- 14153 mark.prager xemacs -geom 180x40 Makefile
| \--- 14155 mark.prager /usr/bin/tcsh -i
|-+- 13840 mark.prager xterm -ls -sl 500 -sb -display 172.30.31.240:0 -e cleartool setview jacky_SVC_4
| \--- 13841 mark.prager tcsh
|-+- 05269 mark.prager xterm -ls -sl 500 -sb -display 172.30.30.63:0 -e cleartool setview jacky_SVC_43
| \--- 05270 mark.prager tcsh
|--- 19929 mark.prager /usr/dt/bin/ttsession
|--- 19914 mark.prager /usr/dt/bin/dsdm
\-+- 18928 mark.prager xterm -ls -sl 500 -sb -display 172.30.31.240:0 -e cleartool setview anat_R4_CDB
\--- 18929 mark.prager tcsh
Please kill those processes not needed any more.
You can get a list of these processes by typing:
pstree -wu <username>
or
ps -f -u <username>
You can terminate processes by typing:
kill -15 | -9 <process_id>
If you require further help, then please call mark.
Thank You
The Unix System: medusa
