Copy history from one git repo to another

cd repository
git log --pretty=email --patch-with-stat --reverse -- path/to/file_or_folder > ../patch
cd ../other_repository
git am < ../patch

Portable, super efficient alternative to seq

Ever missed seq on a non-gnu system (like older Solaris)?

Here's an extremely portable alternative which turns out to be much more efficient too!

yes '' | head -100000 | cat -n

Phil explained that the efficiency is to do with the way that cat does its line numbering (by incrementing the ASCII characters rather than counting numbers and converting them to characters) Thanks Phil!

Trash the hard disk on Solaris VM

If you want to wipe out the boot sector on a Solaris x86 VM so a reboot takes you straight into a net boot to rebuild the host... (because often VMWare takes so long for the console to come up that you don't have a chance to hit F12 before it boots the grub loader)

# dd if=/dev/zero of=/dev/dsk/c1t0d0 count=1 bs=512

Linux: Which processes are using the most RAM?

An easy clear way to see which processes are gobbling all the memory:

$ ps -eo pid,vsz,args | sort -k2n

I got the idea from:
http://superuser.com/questions/398862/linux-find-out-what-process-is-using-all-the-ram

Sometimes when you want to do something on the web, they insist you give an email address to sign up.

Many of them won't accept addresses from

https://www.guerrillamail.com/

But they MAY accept addresses from:

http://www.mailexpire.com/

easy... just point a mailexpire address at a guerrillamail account...

Job done! :-)

VBS script to launch multiple PuTTY sessions

This is to launch parallel PuTTY sessions to a list of hosts, as by the name of their saved PuTTY sessions.

Set objShell = CreateObject("WScript.Shell") dim hosts hosts = "host1 host2 host3 host4" dim host for each host in split(hosts) objShell.Exec "C:\Program Files\PuTTY\PUTTY.EXE -load " + host next

NB: you could use

objShell.Exec "C:\Program Files\PuTTY\PUTTY.EXE username@" + host

instead of

objShell.Exec "C:\Program Files\PuTTY\PUTTY.EXE -load " + host

If you want to log straight into the box without using a saved session

bash command history elements

While you can do

<command> !$

To reuse the last argument of the previous command, you can also use !:n to get the n'th word from the previous command line.

!:0 is the command, the arguments start at index 1.

!* gives ALL of the arguments without the command.

Thanks larsmans & Gilles

Solaris x86 serial numbers

$ ipmitool fru

Invalidate nscd cache

If you want nscd to forget a database, you can invalidate it so that it gets reloaded next time you query it.

Use:

nscd -i <database>

e.g.:

nscd -i passwd

Adding an ACL with chmod

chmod A+user:$USER:write_attributes/write_acl:allow $FILENAME

Look at http://www.cuddletech.com/blog/pivot/entry.php?id=939 for more.

The secret is in the +
Use:

ls -v(a)

To show the existing ACL.