Line Replacement help needed.

pinga123 · #1 (**permalink**) 4 Weeks Ago

I have a file called vm.cfg which looks like follows

Code:

[root@OVM-SERVER1 vm_temp]# cat vm.cfg
acpi = 1
apic = 1
builder = 'hvm'
device_model = '/usr/lib/xen/bin/qemu-dm'
disk = ['file:/var/ovs/mount/93B14928C7A6438284753B2F2AB197BB/seed_pool/vm_temp/System.img,hda,w',
'file:/OVS/iso_pool/winxpsp2/WXPVOL_EN.iso,hdc:cdrom,r',
]
kernel = '/usr/lib/xen/boot/hvmloader'
memory = '300'
name = 'vm_temp'
on_crash = 'restart'
on_reboot = 'restart'
pae = 1
serial = 'pty'
timer_mode = '0'
usbdevice = 'tablet'
uuid = '8569c556-fdf9-41f7-93f4-52350560b13c'
vcpus = 1
vif = ['bridge=xenbr0,mac=00:16:3E:64:FB:D3,type=ioemu']
vif_other_config = []
vnc = 1
vncconsole = 1
vnclisten = '0.0.0.0'
vncpasswd = 'oracle'
vncunused = 1

pogdorica · #2 (**permalink**) 4 Weeks Ago

Do you want this?

Code:

[root@OVM-SERVER1 vm_temp]# sed "s/^name.*/name = newvalue/g" vm.cfg

pinga123 · #3 (**permalink**) 4 Weeks Ago

How would i substitute new value for disk = ['file:/var/ovs/mount/93B14928C7A6438284753B2F2AB197BB/seed_pool/vm_temp/System.img,hda,w',
'file:/OVS/iso_pool/winxpsp2/WXPVOL_EN.iso,hdc:cdrom,r',
]
I want to change the first parameter i.e
file:/var/ovs/mount/93B14928C7A6438284753B2F2AB197BB/seed_pool/vm_temp/System.img
to
some other value.

pogdorica · #4 (**permalink**) 4 Weeks Ago

Hi.

If that line is all in the same line .......

Code:

newfile="fjsdkfjsl"
sed "s|'file:.*,|'file:$newfile,|"

summer_cherry · #5 (**permalink**) 4 Weeks Ago

Code:

echo "Pls input the name"
read name
val=`nawk -F" = " -v name="$name" '$1==name {print $2}' yourfile`
if [ $val = "" ];then
        echo "no such configuration item"
else
        echo $val | sed "s/'//g"
fi

lnviyyapu · #6 (**permalink**) 4 Weeks Ago

Hi,

Try this ,

===============================
str=`grep name cfg.txt|awk '{print $3}'`
echo "enter the value for "
read repstr
sed "s/$str/\'$repstr\'/" cfg.txt >temp

More UNIX and Linux Forum Topics You Might Find Helpful
Thread	Thread Starter	Forum	Replies	Last Post
sed/shell scripting - add line if needed and not allready there	computethis	Shell Programming and Scripting	2	4 Weeks Ago 12:44 AM
New Line help needed	netfrugal	Shell Programming and Scripting	7	10-19-2009 04:19 PM
sed xml file multiple line replacement	cbo0485	Shell Programming and Scripting	3	07-15-2009 04:47 PM
Third line occurrence replacement	sirokket16	Shell Programming and Scripting	5	07-03-2008 01:04 PM
Help needed in character replacement in Korn Shell	stevefox	Shell Programming and Scripting	8	03-30-2007 12:59 AM

Bits Awarded / Charged to pogdorica for this Post
Date	User	Comment	Amount
4 Weeks Ago	pinga123	Thanks	10

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes	Rate This Thread
Switch to Linear Mode Hybrid Mode Switch to Threaded Mode	Rate This Thread:


	Powered by