Useful Unix Commands for PS Admin activity

**************************************************************************

du -skh * // summarize disk usage...

du -skh . // summarize disk usage...

// displays number of free disk blocks and free files of of PWD's file system

df -kh .

// displays number of free disk blocks and free files of all file systems

$df -kh

$ uname -a // print name of current system

SunOS frc25k8d13z1 5.10 Generic_118833-02 sun4u sparc SUNW,Sun-Fire-15000

// looks for the filenames starting with appsrv* in PWD (.)

$find . -name appsrv* -print

// looks for the filenames starting with appsrv* in directory DirName

$find DirName -name appsrv* -mtime +15 –print

//command to know the nature of the OS (SunOS/Solaris only)

$isainfo -b

example:

$echo "Welcome to "`isainfo -b`"-bit Solaris"





# Output can be directed to another program or to a file.

# send output to a file

command > /tmp/output.log



# redirect error output

command > /tmp/output.log 2> /tmp/errors.log



# send output to grep program

command PIPE grep "something"

(PIPE Command should pe replaced by vertical line... not able to publish PIPE command through blogspot)



# Date formatting... Grab the date from the system and format it, to a YYYYMMDD format

filename=`date +'%Y%m%d'`



# Scan a file in shell script

for VALUE in `cat value.dat`

do

echo "Value in file: " $VALUE

done




# Backspace key's settings... depends on emulator

$stty erase ^?

**************************************************************************