C.1 Linux Operating System Commands

This section lists Linux commands that can help you manage your GroupWise system on Linux. It also helps you create a Linux core file if you need Support assistance with the Linux GroupWise agents.

C.1.1 Basic Commands

The following basic commands are available on Linux:

Command	Description
man command	Displays information about any Linux command, including the commands used to start GroupWise programs.
whoami	Displays who you are logged in as.
uname -a	Displays the kernel version, along with other useful information

C.1.2 File and Directory Commands

The following file and directory commands are available on Linux:

Command	Description
pwd	Displays your current directory (“print working directory”).
ls -l	Lists the files in the current directory, along with useful information about them.
ls -al	Includes hidden system files (those whose names start with a dot) in the list.
more file_name	Pages through the contents of a file (forward only).
less file_name	Pages through the contents of a file and lets you page back up through the file.
tail file_name	Displays the last 10 lines of a file. This is helpful for log files. (The head commands displays the first 10 lines.)
cp source destination	Copies a file or directory.
mv source destination	Moves or renames a file or directory.
find starting_directory -name file_name	Find the specified file, starting in the specified directory. Specifying / starts the find operation in the root directory.
grep string file	Searches the specified file for the specific string of characters. This is useful for locating specific information in GroupWise agent startup files.
mkdir directory_name	Creates a new directory.
rmdir directory_name	Deletes an empty directory.
rm file_name	Deletes a file.
rm -r directory_name	Deletes a directory and recursively deletes its contents.
cat file_name	Displays a file.
cat file_name /printer_device	Prints a file.

C.1.3 Process Commands

The following process commands are available on Linux:

Command	Description
top	Lists all processes, sorted by CPU percentage with the highest at the top of the list.
ps -eaf \| grep program	Lists all processes and their IDs associated with the specified program. Wildcard characters can be used to list a group of related programs (for example, gw*).
ps -aux \| grep user_name	Lists all processes and their IDs associated with the specified user.
kill process_ID	Stops the specified process like a normal exit.
kill -9 process_ID	Stops the specified process after it has failed to exit normally. Temporary files are not cleaned up.
killall program	Kills all processes associated with the specified program.
xkill	Closes the window that you click on with the resulting box-shaped cursor.

C.1.4 Disk Usage Commands

The following disk usage commands are available on Linux:

Command	Description
df	Lists file system disk space usage in terms that make sense to your computer.
df -h	Lists file system disk space usage in terms that make sense to humans.
du	Lists disk space usage of each subdirectory below your current working directory
du -s	Lists the cumulative disk space usage of your current working directory.
du -s file_or_directory	Lists the disk space usage for a file or the cumulative disk space usage for a directory and its contents.

C.1.5 Package Commands

The following package commands are available on Linux:

Command	Description
rpm -qa \| grep novell	Lists all OpenText packages installed on your server
rpm -qi package_name	Lists useful information about an installed package, such as name, version, release date, install date, size description, build date, and so on.
rpm -ql package_name	Lists where each file in the package has been installed
rpm -e package_name	Uninstalls a package

C.1.6 File System Commands

The following file system commands are available on Linux:

Command	Description
mount	Lists the file systems that are currently mounted on your server.
ncpmount -S fully_qualified_hostname -V volume_name -A ip_address -U fully_qualified_admin_user /linux_mount_directory	Mounts a Linux filesystem to a Linux server.
mount -t smbfs //fully_qualified_hostname/windows_share_name /linux_mount_directory -o username=windows_administrator	Mounts a Windows server or Samba share as a file system on your Linux server.

Command

Description

mount

Lists the file systems that are currently mounted on your server.

ncpmount -S fully_qualified_hostname 
         -V volume_name -A ip_address 
         -U fully_qualified_admin_user 
         /linux_mount_directory

Mounts a Linux filesystem to a Linux server.

mount -t smbfs 
   //fully_qualified_hostname/windows_share_name
   /linux_mount_directory 
   -o username=windows_administrator

Mounts a Windows server or Samba share as a file system on your Linux server.

C.1.7 Network Commands

The following network commands are available on Linux:

Command	Description
ifconfig -a	Lists the IP address and other detailed information about the NIC in your Linux server.
hostname	Displays the host name of your server.
dig	Displays host information about your server
netstat -lnp \| grep program netstat -lnp \| egrep ‘program\|program\|...'	Lists the port numbers in use by one or more programs. It is also a handy command for checking to see whether the specified programs are currently running.
ping ip_address_or_hostname	Checks to see if the specified server is responding on the network.

C.1.8 Linux Core File

A core file is an image of a process such as a GroupWise agent that is created by the Linux operating system when the agent terminates unexpectedly. A proper core file can help OpenText Support determine why a GroupWise agent is having problems in your GroupWise system. See TID 3447847, How to Obtain a GroupWise Agent Core File on Linux, in the OpenText Support Knowledgebase.