# server information
uname -a

# server config information
prtconf
sysdef -i

# server up time
uptime

# disk free, listed in KB
df -kt

# mounted devices
mount

# network status
netstat -rn

# network configuration info
ifconfig -a

# processes currently running
ps -elf

# user processes
w
whodo
who am i
finger
ps

# virtual memory statistics
vmstat 5 5

# system activity reporter (Solaris/AIX)
sar 5 5

# report per processor statistics (Solaris)
mpstat 5 5
psrinfo

# swap disk status (Solaris)
swap -l

# shared memory
ipcs -b

# shutdown the server in 60 seconds, restart system in administrative state
# (Solaris)
/usr/sbin/shutdown -y -g60 -i1  "System is begin restarted"

# shutdown the server immediately, cold state
# (Solaris)
/usr/sbin/shutdown -y -g0 -i0

# shutdown AIX server, reboot .. also Ctrl-Ctrl/Alt
shutdown -Fr



# restart the server
/usr/sbin/reboot

# add jsmith account .. the -m parm forces the home dir creation
useradd -c "Jim Smith" -d /home/jsmith -m -s "/usr/bin/ksh" jsmith

# change group for jsmith
chgrp staff jsmith

# change jsmith password
passwd jsmith

# change jsmith description
usermod -c "J.Smith" jsmith

# remove ksmith account
userdel ksmith

# display user accounts
cat /etc/passwd

/* here is a sample .profile script, for sh or ksh */
stty istrip
stty erase ^H
PATH=/usr/bin:/usr/ucb:/etc:/usr/lib/scripts:/usr/sbin:.
export PATH
PS1='BOXNAME:$PWD>'
export PS1

# display file contents
cat myfile

# determine file type
file myfile

# display file, a screen at a time (Solaris)
pg myfile

# display first 100 lines of a file
head -100 myfile

# display last 50 lines of a file
tail -50 myfile

# display file that is changing, dynamically
tail errlog.out -f

# display files, with permissions
ls -l
# make file readable, writeable, and executable for group/others
chmod 777 myfile

# make file readable and executable for group/others
chmod 755 myfile

# make file inaccessible for all but the owner
chmod 700 myfile

# make file readable and executable for group/others,
# user assumes owner's group during execution
chmod 4755 myfile

# change permission flags for directory contents
chmod -R mydir

# change group to staff for this file
chgrp staff myfile

# change owner to jsmith for this file
chown jsmith myfile

# list all files, with directory indicator, long format
ls -lpa

# list all files, sorted by date, ascending
ls -lpatr

# list all text files
ls *.txt

# rename file to backup copy
mv myfile myfile.bak

# copy file to backup copy
cp myfile myfile.bak

# move file to tmp directory
mv myfile /tmp

# copy file from tmp dir to current directory
cp /tmp/myfile .

# delete the file
rm myfile

# delete directory
rd mydir

# delete directory, and all files in it
rm -r mydir

# display disk free, in KB
df -kt

# display disk usage, in KB for directory
du -k mydir

# display directory disk usage, sort by largest first
du -ak / | sort -nr | pg

# display contents of a file
tar tvf myfile.tar

# display contents of a diskette (Solaris)
volcheck
tar tvf /vol/dev/rdiskette0/unnamed_floppy

# copy files to a tar file
tar cvf myfile.tar *.sql

# format floppy, and copy files to it (Solaris)
fdformat -U -b floppy99
tar cvf /vol/dev/rdiskette0/floppy99 *.sql

# append files to a tar file
tar rvfn myfile.tar *.txt

# extract files from a tar filem to current dir
tar xvf myfile.tar

Glossary:

   & - run in background
   nohup (No Hang Up) - lets process continue, even if session is disconnected


# run a script, in the background
runbackup &

# run a script, allow it to continue after logging off
nohup runbackup &


# Here nohup.out will still be created, but any output will
# show up in test70.log.  Errors will appear in nohup.out.

nohup /export/spare/hmc/scripts/test70 > test70.log &



# Here nohup.out will not be created; any output will
# show up in test70.log.  Errors will appear test70.log also !

nohup /export/spare/hmc/scripts/test70 > test70.log 2>&1  &

1) In your own session;  e.g. jobs were submitted, but you never logged out:

ps                           # list jobs
kill -9  < process id>       # kill it



2) In a separate session

# process ID appears as column 4
ps -elf | grep -i 

kill -9  < process id>       # kill it



3)  For device (or file)

# find out who is logged in from where

w

# select device, and add /dev ... then use the fuser command

fuser -k /dev/pts/3

# send output to a file
runbackup > /tmp/backup.log

# also redirect error output
runbackup > /tmp/backup.log 2> /tmp/errors.log

# send output to grep program
runbackup | grep "serious"

# Date stamping files
# format is :
# touch -t yyyymmddhhmi.ss filename

touch -t 199810311530.00 hallowfile

# lowercase functions (ksh)
typeset -u newfile=$filename

# date formatting, yields 112098 for example
date '+%m%d%y'

# display a calendar (Solaris / AIX)
cal

# route output to both test.txt and std output
./runbackup | tee test.txt

# sleep for 5 seconds
sleep 5

# send a message to all users
wall "lunch is ready"

# edit file, which displays at login time (message of the day)
vi /etc/motd

# edit file, which displays before login time (Solaris)
vi /etc/issue