Fix with IZ19951: WRITE TO /DEV/CONSOLE CREATES ERROR LOG ENTRY. APPLIES TO AIX 5300-08

Ecco alcuni comandi utili per gestire le code delle mail di postfix

./postqueue -p –> vede le mail in coda
./postqueue -i 4E387D6D01 –> forza l’invio della mail con ID 4E387D6D01
./postqueue -f –> forza l’invio di tutte le mail in coda

Lanciando il seguente comando dall’utente xxxx

xxxx >sudo su – root -c SALVA_TUTTO_FABIO

Compare l’errore :

sudo: parse error in /etc/sudoers near line -1

Problema nella configurazione di sudo, nel file /etc/sudoers non erano impostati le configurazioni per l’utente xxxx

# User privilege specification
root ALL=(ALL) ALL
xxxx ALL= NOPASSWD: /usr/bin/su

Per deallocare una risorda dal master a seguito dell’errore 0042-356 generato dal NIM eseguire il seguente comando

nim -o deallocate -a lpp_source=lppsource1 master

Using netstat to see the listening processes

To see if a program or process is listening on a port, ready to accept a packet, use the netstat program.

netstat -tulnp

The arguments to the netstat program are listed below:

•t – Show TCP

•u – Show UDP

•l – Show only listening processes (netstat can show both listening and all established connections, i.e. as a client too)

•n – Do not resolve network IP address names or port numbers

•p – Show the process name that is listening on the port

Change:

/etc/hosts
/etc/sysconfig/network
esxcfg-advcfg -s /Misc/Hostname

reboot

VMware Hot-Add Memory/CPU Support

Modifico ogni riga inserendo firstword come prima parola e lastword come ultima parola:

sed ‘s/^/firstword/g;s/$/lastword/g’ changefile.txt

da vi posso :

%s/^/firstword/g
%s/$/lastword/g

Disable swapping for the associated logical volume:

# swapoff -v /dev/VolGroup00/LogVol01
Resize the LVM2 logical volume by 256 MB:

# lvm lvresize /dev/VolGroup00/LogVol01 -L +256M
Format the new swap space:

# mkswap /dev/VolGroup00/LogVol01
Enable the extended logical volume:

# swapon -va
Test that the logical volume has been extended properly:

# cat /proc/swaps # free

How to Check Memory Usage in Linux based Server