How would one go about deleting the first two characters on each line of a file on Unix? I thought about using awk, but cannot seem to find if it can explicitly do this. In this case there might or might not be a field separator. Meaning that the data might look like this.
01999999999... (5 Replies)
I have a file that looks like this:
It is a huge file and basically I want to delete everything at the > line except for the number after “C”.
>c1154... (2 Replies)
I have two files abc.dat and sant.dat (Big file 60k rows)
for every line's 1,4 of abc.dat need to seach if this is present on 28,4 of sant.dat every line.
if its present the output needs to go to bde.dat
Example:
contents abc.dat
aaaa
bbbb
cccc
dddd
contents sant.dat
this is... (4 Replies)
Hi
I have a file which contains wrong XML, There are some garbage characters at the end of line that I want to get rid of. Example:
<request type="product" ><attributes><pair><name>q</name><value><!]></value></pair><pair><name>start</name><value>1</value></pair></attributes></request>�J ... (7 Replies)
Hi,
I have a weird requirement. I am having a file with 12fields in it and the end of the line for each record is "\n" (Just \n and no carriage returns) and the field delimiter is "|". Problem is I can have new line characters in any field in the data and these new line characters can even come... (11 Replies)
Hi,
I am trying to get an output like :
+----------------------------------+ ----------- +
+ some variable substitution + some text +
Is there a way I can specify in printf (in ksh) the particular position I want to print a character, and also repeat a character from... (1 Reply)
Hi gurus,
I am trying to figure out how to extract substring from file line (all lines in file), as specified position and specified legth.
Example input (file lines)
dhaskjdsa dsadhkjsa dhsakjdsad hsadkjh
dsahjdksahdsad sahkjd sahdkjsahd sajkdh adhjsak
I want to extract substring on... (5 Replies)
I have several questions about using awk. I'm hoping someone could lend me a hand. (I'm also hoping that my questions make sense.)
I have a file that contains pipe separated data. Each line has similar data but the number of fields and the field position on each line is variable. ... (3 Replies)
I have a file with 100 lines. On 50 th line , from position 5 to rest of the data , I need to change the occurrence of A to B and Occurrence of M to N.
Input file :
Line1
Line2
Line3
--
--
12345ABCDEFM
---
--
Line 100
Output
Line1
Line2 (40 Replies)
Hi,
I need to remove line breaks from a file, but only the ones at specific position.
Input file:
this is ok
this line is divided at posit
ion 30. The same as this one,
also position 30
the rest of lines are ok
with different lengths
The longest ones are always s
plitted at same... (15 Replies)
Discussion started by: qranumo
15 Replies
LEARN ABOUT DEBIAN
pure-authd
pure-authd(8) Pure-FTPd pure-authd(8)NAME
pure-authd - External authentication agent for Pure-FTPd.
SYNTAX
pure-authd [-p </path/to/pidfile>] [-u uid] [-g gid] [-B] <-s /path/to/socket> -r /program/to/run
DESCRIPTION
pure-authd is a daemon that forks an authentication program, waits for an authentication reply, and feed them to an application server.
pure-authd listens to a local Unix socket. A new connection to that socket should feed pure-authd the following structure :
account:xxx
password:xxx
localhost:xxx
localport:xxx
peer:xxx
end
(replace xxx with appropriate values) . localhost, localport and peer are numeric IP addresses and ports. peer is the IP address of the
remote client.
These arguments are passed to the authentication program, as environment variables :
AUTHD_ACCOUNT
AUTHD_PASSWORD
AUTHD_LOCAL_IP
AUTHD_LOCAL_PORT
AUTHD_REMOTE_IP
AUTHD_ENCRYPTED
The authentication program should take appropriate actions to fetch account info according to these arguments, and reply to the standard
output a structure like the following one :
auth_ok:1
uid:42
gid:21
dir:/home/j
end
auth_ok:xxx
If xxx is 0, the user was not found (the next authentication method passed to pure-ftpd will be tried) . If xxx is -1, the user was
found, but there was a fatal authentication error : user is root, password is wrong, account has expired, etc (next authentication
methods will not be tried) . If xxx is 1, the user was found and successfully authenticated.
uid:xxx
The system uid to be assigned to that user. Must be > 0.
gid:xxx
The primary system gid. Must be > 0.
dir:xxx
The absolute path to the home directory. Can contain /./ for a chroot jail.
slow_tilde_expansion:xxx (optional, default is 1)
When the command 'cd ~user' is issued, it's handy to go to that user's home directory, as expected in a shell environment. But
fetching account info can be an expensive operation for non-system accounts. If xxx is 0, 'cd ~user' will expand to the system user
home directory. If xxx is 1, 'cd ~user' won't expand. You should use 1 in most cases with external authentication, when your FTP
users don't match system users. You can also set xxx to 1 if you're using slow nss_* system authentication modules.
throttling_bandwidth_ul:xxx (optional)
The allocated bandwidth for uploads, in bytes per second.
throttling_bandwidth_dl:xxx (optional)
The allocated bandwidth for downloads, in bytes per second.
user_quota_size:xxx (optional)
The maximal total size for this account, in bytes.
user_quota_files:xxx (optional)
The maximal number of files for this account.
ratio_upload:xxx (optional)
radio_download:xxx (optional)
The user must match a ratio_upload:ratio_download ratio.
Only one authentication program is forked at a time. It must return quickly.
OPTIONS -u <uid>
Have the daemon run with that uid.
-g <gid>
Have the daemon run with that gid.
-B Fork in background (daemonization).
-s </path/to/socket>
Set the full path to the local Unix socket.
-R </path/to/program>
Set the full path to the authentication program.
-h Output help information and exit.
EXAMPLES
To run this program the standard way type:
pure-authd -s /var/run/ftpd.sock -r /usr/bin/my-auth-program &
pure-ftpd -lextauth:/var/run/ftpd.sock &
/usr/bin/my-auth-program can be as simple as :
#! /bin/sh
echo 'auth_ok:1'
echo 'uid:42'
echo 'gid:21'
echo 'dir:/home/j'
echo 'end'
AUTHORS
Frank DENIS <j at pureftpd dot org>
SEE ALSO ftp(1), pure-ftpd(8)pure-ftpwho(8)pure-mrtginfo(8)pure-uploadscript(8)pure-statsdecode(8)pure-pw(8)pure-quotacheck(8)pure-authd(8)
RFC 959, RFC 2389, RFC 2228 and RFC 2428.
Pure-FTPd team 1.0.36 pure-authd(8)