apply command (in AIX only?)

Here is a fast way to do function loop : 

apply "ssh server%1_pers date" 2 3 5 6  7 8

Replaces %1 with following parameters 

same as : 

for i in 2 3 5 6 7 8 
do
     ssh server${i}_pers date
done

Exclude files or directories from commands

An easy way to remove elements from command line : 

root:/# rm !(*.c|*.h)  => remove every files except *.c or *.h) 

another syntax : 

root:/# rm !(*.@(c|h))  => same thing ...

Can be used with grep, for directories exlusion. :

root:/#  grep P770_P7_1_A30 !(www|logs)/* => grep P770_P7_1_A30 from every underlying directories, except www and logs