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Full Discussion: Perl script solution
Top Forums Shell Programming and Scripting Perl script solution Post 302422076 by webhope on Monday 17th of May 2010 11:18:42 AM
Old 05-17-2010
It is stil not ideal, I send you some other forms if input text:
Code:
block='title Sata Mandriva
kernel (hd0,2)/boot/vmlinuz BOOT_IMAGE=linux root=(hd0,2) resume=UUID=e12487ff-6d6f-44c4-9e03-33f545b3b798 splash=silent vga=788
initrd (hd0,2)/boot/initrd.img'

hd0,2 instead (hd0,2)

Code:
block='title Sata Mandriva
kernel (UUID=e12487ff-6d6f-44c4-9e03-33f545b3b798)/boot/vmlinuz BOOT_IMAGE=linux root=(UUID=e12487ff-6d6f-44c4-9e03-33f545b3b798) resume=UUID=e12487ff-6d6f-44c4-9e03-33f545b3b798 splash=silent vga=788
initrd (hd0,2)/boot/initrd.img'

It deletes some spaces: products "linuxroot" instead "linux root"

Code:
block='title Sata Mandriva
kernel (UUID=eab515e9-bc3e-4024-9f01-55fddaa0fb1c) /boot (UUID=eab515e9-bc3e-4024-9f01-55fddaa0fb1c) blabla
initrd (UUID=eab515e9-bc3e-4024-9f01-55fddaa0fb1c) /boot (UUID=eab515e9-bc3e-4024-9f01-55fddaa0fb1c) blabla'

Products "/boot(UUID=" instead "/boot (UUID="
and "/boot" instead "/boot (UUID=eab515e9-"
Edit: I wanted to specify that I need to remove something (UUID=...) that follows the kernel or initrd word.

In my original code I tried to identify UUID format \(UUID=[-0-9a-f]*\ not to be confused with block list (hd?,?). (I am not sure if UUID can have big letters)

I think it is not lucky: sub(/[()]/,"",$2) it removes the parantheses whatever it it uuid od hd. Or Map! map (hd0) (hd1)

I want to ask you about this: r=$3$4; does it mean, you rely on IFS=$' '? How we get $3 and $4 ?
Last edited by webhope; 05-17-2010 at 12:26 PM..
 

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LEARN ABOUT DEBIAN

systemd-cryptsetup-generator

SYSTEMD-CRYPTSETUP-GENERATOR(8) 			   systemd-cryptsetup-generator 			   SYSTEMD-CRYPTSETUP-GENERATOR(8)

NAME

       systemd-cryptsetup-generator - Unit generator for /etc/crypttab

SYNOPSIS

       /lib/systemd/system-generators/systemd-cryptsetup-generator

DESCRIPTION

       systemd-cryptsetup-generator is a generator that translates /etc/crypttab into native systemd units early at boot and when configuration of
       the system manager is reloaded. This will create systemd-cryptsetup@.service(8) units as necessary.

       systemd-cryptsetup-generator implements systemd.generator(7).

KERNEL COMMAND LINE

       systemd-cryptsetup-generator understands the following kernel command line parameters:

       luks=, rd.luks=
	   Takes a boolean argument. Defaults to "yes". If "no", disables the generator entirely.  rd.luks= is honored only by initial RAM disk
	   (initrd) while luks= is honored by both the main system and the initrd.

       luks.crypttab=, rd.luks.crypttab=
	   Takes a boolean argument. Defaults to "yes". If "no", causes the generator to ignore any devices configured in /etc/crypttab
	   (luks.uuid= will still work however).  rd.luks.crypttab= is honored only by initial RAM disk (initrd) while luks.crypttab= is honored
	   by both the main system and the initrd.

       luks.uuid=, rd.luks.uuid=
	   Takes a LUKS superblock UUID as argument. This will activate the specified device as part of the boot process as if it was listed in
	   /etc/crypttab. This option may be specified more than once in order to set up multiple devices.  rd.luks.uuid= is honored only by
	   initial RAM disk (initrd) while luks.uuid= is honored by both the main system and the initrd.

	   If /etc/crypttab contains entries with the same UUID, then the name, keyfile and options specified there will be used. Otherwise, the
	   device will have the name "luks-UUID".

	   If /etc/crypttab exists, only those UUIDs specified on the kernel command line will be activated in the initrd or the real root.

       luks.name=, rd.luks.name=
	   Takes a LUKS super block UUID followed by an "=" and a name. This implies rd.luks.uuid= or luks.uuid= and will additionally make the
	   LUKS device given by the UUID appear under the provided name.

	   rd.luks.name= is honored only by initial RAM disk (initrd) while luks.name= is honored by both the main system and the initrd.

       luks.options=, rd.luks.options=
	   Takes a LUKS super block UUID followed by an "=" and a string of options separated by commas as argument. This will override the
	   options for the given UUID.

	   If only a list of options, without an UUID, is specified, they apply to any UUIDs not specified elsewhere, and without an entry in
	   /etc/crypttab.

	   rd.luks.options= is honored only by initial RAM disk (initrd) while luks.options= is honored by both the main system and the initrd.

       luks.key=, rd.luks.key=
	   Takes a password file name as argument or a LUKS super block UUID followed by a "=" and a password file name.

	   For those entries specified with rd.luks.uuid= or luks.uuid=, the password file will be set to the one specified by rd.luks.key= or
	   luks.key= of the corresponding UUID, or the password file that was specified without a UUID.

	   rd.luks.key= is honored only by initial RAM disk (initrd) while luks.key= is honored by both the main system and the initrd.

SEE ALSO

       systemd(1), crypttab(5), systemd-cryptsetup@.service(8), cryptsetup(8), systemd-fstab-generator(8)

systemd 237													   SYSTEMD-CRYPTSETUP-GENERATOR(8)
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