Ubuntu Linux, ubuntu desktop, Linux operating system, ubuntu guide

Linux, Unix, MAC

Fedora,CentOS, Redhat

Type the following command to get list of all installed software

# rpm -qa | less 

# yum list installed


Debian,Ubuntu

# dpkg --get-selections

Gentoo Linux

# qlist -I

SUSE Linux

# zypper -l

FreeBSD,OpenBSD, Solaris

# pkg_info | less

AIX

# lspp

MAC

# pkgutil --pkgs

Today I have worked with production AIX 5.3 server, I have logged using normal user account and checked the command ls, df etc. That time commands not running and showing like

$ df -k

ksh df: command not found

$ ls

ksh ls: command not found

But its working using /usr/bin

$ /usr/bin/df -k
Filesystem 1024-blocks Free %Used Iused %Iused Mounted on
/dev/hd4 262144 198812 25% 2958 7% /
/dev/hd2 11796480 1348816 89% 36412 11% /usr
/dev/hd9var 2359296 567736 76% 3055 3% /var
/dev/hd3 262144 259856 1% 19 1% /tmp
/dev/hd1 262144 253740 4% 672 2% /home
/proc – – – – – /proc
/dev/hd10opt 786432 139180 83% 7135 19% /opt
/dev/fslv01 262144 245112 7% 96 1% /Logging
/dev/lv01a 41943040 26588040 37% 135500 3% /u01
/dev/lv01b 209715200 198761360 6% 287744 1% /dbnk
/dev/lv01c 794951680 697256652 13% 252 1% /oradata
/dev/netlv 5242880 440112 92% 53 1% /netlv
$ /usr/bin/ls -al
total 24
drwxr-xr-x 3 root system 256 Jul 08 2009 .
drwxr-xr-x 137 oracle dba 8192 Apr 28 2010 ..
-rwxr—– 1 mon staff 22 Sep 06 07:32 .profile
drwx—— 2 mon staff 256 Jul 06 2009 .ssh

Finally I have found that some entry missing in .profile file. I have added “PATH=/usr/bin:.” in .profile. For the immediate effect  I have give like that

$export PATH=/usr/bin:.

Now the commands worked without any issue

$ df -k
Filesystem 1024-blocks Free %Used Iused %Iused Mounted on
/dev/hd4 262144 198764 25% 2958 7% /
/dev/hd2 11796480 1348724 89% 36412 11% /usr
/dev/hd9var 2359296 567464 76% 3055 3% /var
/dev/hd3 262144 259856 1% 19 1% /tmp
/dev/hd1 262144 253740 4% 672 2% /home
/proc – – – – – /proc
/dev/hd10opt 786432 139180 83% 7135 19% /opt
/dev/fslv01 262144 245084 7% 96 1% /Logging
/dev/lv01a 41943040 26588036 37% 135500 3% /u01
/dev/lv01b 209715200 198761360 6% 287744 1% /dbnk
/dev/lv01c 794951680 697256652 13% 252 1% /oradata
/dev/netlv 5242880 440112 92% 53 1% /netlv
$ ls -al
total 24
drwxr-xr-x 3 root system 256 Jul 08 2009 .
drwxr-xr-x 137 oracle dba 8192 Apr 28 2010 ..
-rwxr—– 1 mon staff 39 Feb 24 03:47 .profile
drwx—— 2 mon staff 256 Jul 06 2009 .ssh