linux - Shell Script for removing craskernel -


how can remove crashkernel parameter , attached value grub.conf ?

title rhelos (3.6.18-274)         root (hd0,0)         kernel /vmlinuz-3.6.18-274 ro root=label=/ nmi_watchdog=1 crashkernel=64m@16m rhgb quiet console=tty12 loglevel=1         initrd /initrd-3.6.18-274.img

to 

    title rhelos (3.6.18-274)         root (hd0,0)         kernel /vmlinuz-3.6.18-274 ro root=label=/ nmi_watchdog=1 rhgb quiet           console=tty12 loglevel=1         initrd /initrd-3.6.18-274.img

tried awk method deletes entire line.

just parameter crashkernel , not entire line.

thanks !

using sed:

sed -i 's/crashkernel=[0-9@m]*[ ]*//' gryb.conf

or,

sed -i 's/crashkernel=[^ ]*[ ]*//' gryb.conf

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