Unix and Linux command and scripting reference

Analyze Disk Drives

Analyze CPU Utilization

Navigate the File System

Search the File System

Example of searching for a file in the current directory and any subdirectories witha wildcard in the file name:

find . -name "*ConfigService.properties" -print

See also: http://www.athabascau.ca/html/depts/compserv/webunit/HOWTO/find.htm#EX01

Read and Edit Files

Modify File Permissions

Environment control

Output, communication, and help

Process control

Get the active connection in web server user

netstat -a|grep -i est*
to get the count of the active connection use
netstat -a|grep -i est*|wc -l

Delete File that have been created before the past 5 Days

During a Support Project you may need to Delete the Logs that have been older than 60 Days
the command for that look like

find /<replace my_Directory> -mtime +5 -print | xargs rm

where mtime is the File last modification time

Determine the last Day of Month

I found this in net.This script is useful in finding the last day of the month.
Sometime it is necessary to run a command or script on the last day of a month.

month=`date +%m`
today=`date +%e`
year=`date +%Y
lastday=`cal $month $year | grep -v "^$" | tail -1 | awk '{print $NF}'`
if [BlueGuru: $today == $lastday ]; then
echo your code runs here
fi

The grep -v command removes the last line of output if it happens to be blank and the awk command prints the last chunk of data on the line.

FTP script tips

The FTP command only give the read write permission to the owner of the file , sometimes it is necessary for the member of the group or the world to read the file or write the file , in this case you will get the File Permission denied error to over come this in your FTP script add this unmask like
This will create the file with rw-rw-rw- permission.
site umask 000

so your FTP scripts will look something like

ftp $1 << FTP_CMD
cd <your destination Folder>
site umask 000
put $fileName1
quit
FTP_CMD;