My Linux Guide

Managing Partitions

Nishant -

*Mounting filesystem

#mount (fs-type> -o <options> <partition_name> <mount_point>

fs_type=vfat,ext2,ext3,iso9660 etc

options=rw    ro

exec        noexec

dev      nodev

auto    noauto

suid    nosuid

user    nouser or (owner, noowner)

async sync

the above options are default keywords

additional options

loop

uid=<uid>,gid=<gid>

remount,<new_mount_option>

#mount /dev/hdax /personnel (only for temporary or this session only)

(kernel-rpm.rpm for kernel of fat32 supported system)

The above commands only for current serrions.

#vi /etc/fstab -contains mount info of  partitions to permanently mount partitons

format

[partition_name/label_name]  [mount_point]  [fs_type] [options] [dump_freq] [fsck_order]

dump_freq

———-

0–> not a candidate oof dump (backup command)

1–> To create dump backup daily

2–> To create dump backup every alternate day

.

.

.

& so on

fsck_order

————-

0–> Not a candidate oof fsck {filesystem check command)

1–>first candidate of fsck

2–>second ,,       ,,   ,,

.

.

.

& so on

Examples

[p_name/lable           [mount_point]  [fs_type]  [options] [dump_freq]  [fsck_order]

or lable name]

—————————————————————————–

/dev/hdax       /personnel     ext3       defaults      0 or 1     1 or 2

or

LABEL=personnel

* to active the changes of /etc/fstab

#mount -a –To activate nnew entry in /etc/fstab

#df -h

#mount

use options in options filed like

default,ro

for remount command

#mount -o remount /sbogati

#mount

#cd /sbogati

#cat >file

******************************************

Adding Swap space

1. As a partition

#fdisk /dev/hda

#partprobe

2. create swap signature

#mkswap /dev/hdax

3. To activate swap

#free  (displays memory info)

a. temporary  activation

#swapon /dev/hdax

#free

note: to deactivate swap #swap /dev/hdax

#free

b. permanent  activation

# vi /etc/fstab

/dev/hdax       swap       swap      defaults  0 0

#free

after returning for vi editor

#free

#swapon -a –> top activate nnew swap entry in /etc/fstab

#free

adding partition as a file

#dd of=/dev/zero oof=/swapfille(can be give any name) bs=1M count=128000 (128mb)

bs can be write as bs=1K

/dev/zero –> is called inifinite sink

#cd /

#ls -lh swapfile

#mkswap /swapfile (given swap file name)

#free

#swapon /swapfile

#free

#swapon /swapfile

#free

#vi /etc/fstab

/swaapfile swap /swap defaults 0 0

save and exit from here

#swapon -a

#free