Deleting a line from a file based on one specific string instance?
Hello!
I need to delete one line in a file which matches one very precise instance of a stringonly. When searching the forum I unfortunately only found a solution which would delete each line on which a particular string occurs.
Let's assume I have a file composed of thousands of lines and let's call the file chap-secrets. Let's take the following sample entries:
Code:
#USERNAME SERVER PASSWORD IP
pp pptpd blahblah *
cpp pptpd ppbbbbpp *
hopp pptpd ggmmsasm *
flopps pptpd 01234567890abcdef *
The usernames are unique, naturally.
I would now like to delete the line containing the username "pp" only. The following suggestion has been made in a related thread:
However, this doesn't work here, for it would delete (or rather not store) all these lines, because all lines with the usernames "cpp", "hopp" and "flopps" are valid matches, all lines with the server name "pptpd" are valid matches and all lines where the password contains a "pp" (such as "ppbbbbpp") are valid matches, too, and these lines all would be deleted (or rather not stored) as well.
Note that the number of spaces between the fields differ as well all the time, so I can't search for a pattern like
Code:
"pp pptpd"
either.
I suppose this problem is very simple for some of you, but for me it's not, thus every help would be very much appreciated.
Hi,
I have a file that has several values seperated by ":"
2006:John:Student:Football:Portugal:Cinema
2006:James:Engineer:Basket:Poland:Theatre
2007:Lucy:Diver:Gymnastic:England:Music
2007:Smith:Plumber:Basket:Spain:Poker
I need make a filter based on the 5th field to find countries that... (1 Reply)
HI,
Your help was great: awk -F":" '$5 ~ /^P/{print }' file
I would like to know what changes need to be done to this line code, so that I can put it in a shell script and call it as the example below.
example: countries that start with chacater 'P'
> country P
Result:
... (0 Replies)
Hi all,
I have a directory containing many subdirectories each named like KOG#### where # represents any digit 0-9. There are several files in each KOG#### folder but the one I care about is named like KOG####_final.fasta. I am trying to write a script to copy all of the KOG####_final.fasta... (3 Replies)
Hi
I am not the best scripter in the world and have run into a issue which you might be able to guide me on...
I have two files.
File1 :
A123, valueA, valueB
B234, valueA, valueB
C345, valueA, valueB
D456, valueA, valueB
E567, valueA, valueB
F678, valueA, valueB
File2:
C345,... (5 Replies)
Hi,
I want to achieve something similar to what described in another post:
The difference is I want to add the line if the pattern is not found.
File 1:
A123, valueA, valueB
B234, valueA, valueB
C345, valueA, valueB
D456, valueA, valueB
E567, valueA, valueB
F678, valueA, valueB
... (11 Replies)
HI
Can any one guide me how to achieve this task. I have 2 files
env.txt
#Configuration.Properties values
identity_server_url = http://identity.test-hit.com:9783/identity/service/user/register
randon_password_length = 6
attachment_file_path = /pass/temp/attachments/... (1 Reply)
I'm trying to create a script.
There are 2 files - fileA.log & fileB.log
fileA.log has the below data :
aaaa
cccc
eeee
fileB.log has the below data :
cjahdskjah aaaa xyz
jhaskjdhas bbbb abc
ajdhjkh cccc abc
cjahdskjah ... (7 Replies)
I am trying to add a condition to the below perl that will capture the GTtag and place a specific string in the last field of each line. The problem is that the GT value used is not right after the tag rather it is a few fields away. The values should always be 0/1 or 1/2 and are in bold in the... (12 Replies)
In the file below I am trying to extract a specific instance of path, if the adjacent plugin": "/rundb/api/v1/plugin/49/. Thank you :).
file
"path": "/results/analysis/output/Home/Auto_user_S5-00580-4-Medexome_65_028/plugin_out/FileExporter_out.52", "plugin": "/rundb/api/v1/plugin/49/",... (8 Replies)
Discussion started by: cmccabe
8 Replies
LEARN ABOUT SUSE
pptpd.conf
PPTPD.CONF(5) File Formats Manual PPTPD.CONF(5)NAME
pptpd.conf - PPTP VPN daemon configuration
DESCRIPTION pptpd(8) reads options from this file, usually /etc/pptpd.conf. Most options can be overridden by the command line. The local and remote
IP addresses for clients must come from the configuration file or from pppd(8) configuration files.
OPTIONS
option option-file
the name of an option file to be passed to pppd(8) in place of the default /etc/ppp/options so that PPTP specific options can be
given. Equivalent to the command line --option option.
stimeout seconds
number of seconds to wait for a PPTP packet before forking the pptpctrl(8) program to handle the client. The default is 10 seconds.
This is a denial of service protection feature. Equivalent to the command line --stimeout option.
debug turns on debugging mode, sending debugging information to syslog(3). Has no effect on pppd(8) debugging. Equivalent to the command
line --debug option.
bcrelay internal-interface
turns on broadcast relay mode, sending all broadcasts received on the server's internal interface to the clients. Equivalent to the
command line --bcrelay option.
connections n
limits the number of client connections that may be accepted. If pptpd is allocating IP addresses (e.g. delegate is not used) then
the number of connections is also limited by the remoteip option. The default is 100.
delegate
delegates the allocation of client IP addresses to pppd(8). Without this option, which is the default, pptpd manages the list of IP
addresses for clients and passes the next free address to pppd. With this option, pptpd does not pass an address, and so pppd may
use radius or chap-secrets to allocate an address.
localip ip-specification
one or many IP addresses to be used at the local end of the tunnelled PPP links between the server and the client. If one address
only is given, this address is used for all clients. Otherwise, one address per client must be given, and if there are no free
addresses then any new clients will be refused. localip will be ignored if the delegate option is used.
remoteip ip-specification
a list of IP addresses to assign to remote PPTP clients. Each connected client must have a different address, so there must be at
least as many addresses as you have simultaneous clients, and preferably some spare, since you cannot change this list without
restarting pptpd. A warning will be sent to syslog(3) when the IP address pool is exhausted. remoteip will be ignored if the dele-
gate option is used.
noipparam
by default, the original client IP address is given to ip-up scripts using the pppd(8) option ipparam. The noipparam option pre-
vents this. Equivalent to the command line --noipparam option.
listen ip-address
the local interface IP address to listen on for incoming PPTP connections (TCP port 1723). Equivalent to the command line --listen
option.
pidfile pid-file
specifies an alternate location to store the process ID file (default /var/run/pptpd.pid). Equivalent to the command line --pidfile
option.
speed speed
specifies a speed (in bits per second) to pass to the PPP daemon as the interface speed for the tty/pty pair. This is ignored by
some PPP daemons, such as Linux's pppd(8). The default is 115200 bytes per second, which some implementations interpret as meaning
"no limit". Equivalent to the command line --speed option.
NOTES
An ip-specification above (for the localip and remoteip tags) may be a list of IP addresses (for example 192.168.0.2,192.168.0.3), a range
(for example 192.168.0.1-254 or 192.168.0-255.2) or some combination (for example 192.168.0.2,192.168.0.5-8). For some valid pairs might
be (depending on use of the VPN):
localip 192.168.0.1
remoteip 192.168.0.2-254
or
localip 192.168.1.2-254
remoteip 192.168.0.2-254
ROUTING CHECKLIST - PROXYARP
Allocate a section of your LAN addresses for use by clients.
In /etc/ppp/options.pptpd. set the proxyarp option. In pptpd.conf do not set localip option, but set remoteip to the allocated address
range. Enable kernel forwarding of packets, (e.g. using /proc/sys/net/ipv4/ip_forward ).
The server will advertise the clients to the LAN using ARP, providing it's own ethernet address. bcrelay(8) should not be required.
ROUTING CHECKLIST - FORWARDING
Allocate a subnet for the clients that is routable from your LAN, but is not part of your LAN.
In pptpd.conf set localip to a single address or range in the allocated subnet, set remoteip to a range in the allocated subnet. Enable
kernel forwarding of packets, (e.g. using /proc/sys/net/ipv4/ip_forward ). The LAN must have a route to the clients using the server as
gateway.
The server will forward the packets unchanged between the clients and the LAN. bcrelay(8) will be required to support broadcast protocols
such as NETBIOS.
ROUTING CHECKLIST - MASQUERADE
Allocate a subnet for the clients that is not routable from your LAN, and not otherwise routable from the server (e.g. 10.0.0.0/24).
Set localip to a single address in the subnet (e.g. 10.0.0.1), set remoteip to a range for the rest of the subnet, (e.g. 10.0.0.2-200).
Enable kernel forwarding of packets, (e.g. using /proc/sys/net/ipv4/ip_forward ). Enable masquerading on eth0 (e.g. iptables -t nat -A
POSTROUTING -o eth0 -j MASQUERADE ).
The server will translate the packets between the clients and the LAN. The clients will appear to the LAN as having the address corre-
sponding to the server. The LAN need not have an explicit route to the clients. bcrelay(8) will be required to support broadcast proto-
cols such as NETBIOS.
FIREWALL RULES pptpd(8) accepts control connections on TCP port 1723, and then uses GRE (protocol 47) to exchange data packets. Add these rules to your
iptables(8) configuration, or use them as the basis for your own rules:
iptables --append INPUT --protocol 47 --jump ACCEPT
iptables --append INPUT --protocol tcp --match tcp
--destination-port 1723 --jump ACCEPT
SEE ALSO pppd(8), pptpd(8), pptpd.conf(5).
29 December 2005 PPTPD.CONF(5)
01-27-2010
Deleting a line from a file based on one specific string instance?
