Basic Commands:

[acool@localhost ~]$ redis-server --version
Redis server v=2.8.18 sha=00000000:0 malloc=jemalloc-3.6.0 bits=64 build=94164e7f0a3c47c9
[acool@localhost ~]$ 
[acool@localhost ~]$ sudo systemctl start redis
[acool@localhost ~]$ redis-cli
127.0.0.1:6379> 
127.0.0.1:6379> INFO
127.0.0.1:6379>
127.0.0.1:6379> SET fullName "Angel Cool"
OK
127.0.0.1:6379> GET fullName
"Angel Cool"
127.0.0.1:6379> DEL fullName
(integer) 1
127.0.0.1:6379> GET fullName
(nil)
127.0.0.1:6379> INCR attempts
(integer) 1
127.0.0.1:6379> INCR attempts
(integer) 2
127.0.0.1:6379> GET attempts
"2"
127.0.0.1:6379> SETNX attempts 25  //set if not exist
(integer) 0
127.0.0.1:6379> GET attempts
"2"
127.0.0.1:6379> SET token abc123
OK
127.0.0.1:6379> EXPIRE token 60
(integer) 1
127.0.0.1:6379> TTL token
(integer) 51
127.0.0.1:6379> TTL token
(integer) 44
127.0.0.1:6379> SETEX token 120 321abc  //set & expire but atomic ;)
OK
127.0.0.1:6379> TTL token
(integer) 116
127.0.0.1:6379> TTL token
(integer) 114
127.0.0.1:6379> keys *   //get all keys in redis
1) "friends"
2) "attempts"
3) "TOKEN"
127.0.0.1:6379> 
127.0.0.1:6379>
127.0.0.1:6379> type friends  // get key type, possible types: string, list, set, zset, hash.
list
127.0.0.1:6379> type attempts
string

Lists:

127.0.0.1:6379> RPUSH friends Daniel  //push a new value at the end of a list
(integer) 1
127.0.0.1:6379> RPUSH friends William
(integer) 2
127.0.0.1:6379> RPUSH friends Alex
(integer) 3
127.0.0.1:6379> RPUSH friends Rene
(integer) 4
127.0.0.1:6379> LRANGE friends 0 -1  //get all entries in list
1) "Daniel"
2) "William"
3) "Alex"
4) "Rene"
127.0.0.1:6379> LPUSH friends Elizabeth //push a new value at the start of a list
(integer) 5
127.0.0.1:6379> LLEN friends //returns the current lenght of a list
(integer) 5
127.0.0.1:6379> LRANGE friends 2 3 //returns a subset of a list
1) "William"
2) "Alex"
127.0.0.1:6379> 
127.0.0.1:6379> 
127.0.0.1:6379> LPOP friends  //removes the first element from the list and returns it
"Elizabeth"
127.0.0.1:6379> RPOP friends  //removes the last element from the list and returns it
"Rene"
127.0.0.1:6379> 

Sets:

127.0.0.1:6379> SADD countries Canada
(integer) 1
127.0.0.1:6379> SADD countries Chile
(integer) 1
127.0.0.1:6379> SADD countries Brazil
(integer) 1
127.0.0.1:6379> SADD countries Mexico
(integer) 1
127.0.0.1:6379> 
127.0.0.1:6379> 
127.0.0.1:6379> SMEMBERS countries  //output all members of a set
1) "Canada"
2) "Mexico"
3) "Brazil"
4) "Chile"
127.0.0.1:6379> 
127.0.0.1:6379> 
127.0.0.1:6379> SISMEMBER countries Mexico //test if a value is in a set
(integer) 1
127.0.0.1:6379> SREM countries Mexico  //removes a value from a set
(integer) 1
127.0.0.1:6379> SISMEMBER countries Mexico
(integer) 0
127.0.0.1:6379> 
127.0.0.1:6379>
127.0.0.1:6379> 
127.0.0.1:6379> SMEMBERS cities
1) "London"
2) "Los Angeles"
3) "Merida"
127.0.0.1:6379>
127.0.0.1:6379>
127.0.0.1:6379> SUNION cities countries //combines sets and returns all members
1) "Merida"
2) "London"
3) "Canada"
4) "Brazil"
5) "Los Angeles"
6) "Chile"

Sorted Sets:

127.0.0.1:6379> ZADD hackers 1940 "Alan Kay"
(integer) 1
127.0.0.1:6379> ZADD hackers 1906 "Grace Hopper"
(integer) 1
127.0.0.1:6379> ZADD hackers 1953 "Richard Stallman"
(integer) 1
127.0.0.1:6379> ZADD hackers 1965 "Yukihiro Matsumoyo"
(integer) 1
127.0.0.1:6379> ZADD hackers 1983 "Angel Cool"
(integer) 1
127.0.0.1:6379> 
127.0.0.1:6379> 
127.0.0.1:6379> 
127.0.0.1:6379> ZRANGE hackers 2 3 WITHSCORES
1) "Richard Stallman"
2) "1953"
3) "Yukihiro Matsumoyo"
4) "1965"
127.0.0.1:6379> 
127.0.0.1:6379> 
127.0.0.1:6379> ZADD hackers 1980 "Karla Cool"
(integer) 1
127.0.0.1:6379> 
127.0.0.1:6379>
127.0.0.1:6379> 
127.0.0.1:6379> ZRANGE hackers 0 -1 WITHSCORES //all scores, see how it's sorted by score (date of birth)
 1) "Grace Hopper"
 2) "1906"
 3) "Alan Kay"
 4) "1940"
 5) "Richard Stallman"
 6) "1953"
 7) "Yukihiro Matsumoyo"
 8) "1965"
 9) "Karla Cool"
10) "1980"
11) "Angel Cool"
12) "1983"
127.0.0.1:6379>
127.0.0.1:6379> ZREVRANGE hackers 0 -1 withscores  // reverse score
 1) "Angel Cool"
 2) "1983"
 3) "Yukihiro Matsumoyo"
 4) "1965"
 5) "Richard Stallman"
 6) "1953"
 7) "Alan Kay"
 8) "1940"
 9) "Grace Hopper"
10) "1906"
127.0.0.1:6379> 
127.0.0.1:6379> ZCOUNT hackers -inf +inf // returns the number of items in zset
(integer) 5
127.0.0.1:6379>
127.0.0.1:6379> ZREMRANGEBYSCORE hackers 1940 1960 
(integer) 2

Hashes

127.0.0.1:6379> HSET user:1000 firstName Angel
(integer) 1
127.0.0.1:6379> HSET user:1000 lastName Cool
(integer) 1
127.0.0.1:6379> HSET user:1000 website angelcool.net
(integer) 1
127.0.0.1:6379> 
127.0.0.1:6379> 
127.0.0.1:6379> 
127.0.0.1:6379> HGET user:1000 firstName
"Angel"
127.0.0.1:6379>
127.0.0.1:6379> 
127.0.0.1:6379> 
127.0.0.1:6379> HMSET user:2000 firstName Richard lastName Stallman website stallman.org
OK
127.0.0.1:6379> 
127.0.0.1:6379> HGET user:2000 website
"stallman.org"
127.0.0.1:6379> 
127.0.0.1:6379> HGETALL user:2000
1) "firstName"
2) "Richard"
3) "lastName"
4) "Stallman"
5) "website"
6) "stallman.org"
127.0.0.1:6379> 
127.0.0.1:6379> 

[ view entry ] ( 1447 views )   |  print article

---

Amazing trick. This is one of the first thing to try if your CSV spreadsheet is not rendering how you expect.

Original Question:
======================================================
I have a line like this in my CSV:

"Samsung U600 24"","10000003409","1","10000003427"

Quote next to 24 is used to express inches, while the quote just next to that quote closes the field. I'm reading the line with fgetcsv but the parser makes a mistake and reads the value as:

Samsung U600 24",10000003409"

I tried putting a backslash before the inches quote, but then I just get a backslash in the name:

Samsung U600 24\"

Is there a way to properly escape this in the CSV, so that the value would be Samsung U600 24" , or do I have to regex it in the processor?
======================================================


Answer:
======================================================
Use 2 quotes:

"Samsung U600 24"""
======================================================

http://stackoverflow.com/questions/1780 ... ote-in-csv

[ view entry ] ( 1507 views )   |  print article

---

http://jsfiddle.net/m4msmtdk/9/

if it's not fun why do it ? -ben & jerry ice cream

<canvas id="myCanvasNotYours"></canvas>

<script>

var myCanvas = document.getElementById('myCanvasNotYours');
var ctx = myCanvas.getContext('2d');
var img = new Image;
img.onload = function(){
  //alert(img.width);
  myCanvas.width = img.width
  myCanvas.height = img.height
  ctx.drawImage(img,0,-20); // Or at whatever offset you like
};
img.src = 'data:image/png;base64,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';

</script>

[ view entry ] ( 1580 views )   |  print article

---

Postfix: sender-dependent SASL authentication — relay to multiple SMTP hosts, or relay to the same host but authenticate as different users (e.g., two Gmail accounts)

I would like to send mail from two different Gmail accounts using Postfix.

As a concrete example, here's how to set up two Gmail accounts (only relevant sections of the config files are listed below):

/etc/postfix/main.cf:
    # sender-dependent sasl authentication
    smtp_sender_dependent_authentication = yes
    sender_dependent_relayhost_maps = hash:/etc/postfix/sender_relay

    # default relayhost setting
    relayhost = [smtp.gmail.com]:587

    # smtp authentication settings
    smtp_sasl_auth_enable = yes
    smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd
    smtp_sasl_security_options = noanonymous
    smtp_sasl_mechanism_filter = plain
    smtp_tls_CAfile = /etc/pki/tls/certs/ca-bundle.crt
    smtp_use_tls = yes
    smtp_tls_security_level = encrypt

/etc/postfix/sasl_passwd:
    # per-sender authentication
    account1[@]gmail.com account1[@]gmail.com:passwd1
    account2[@]gmail.com account2[@]gmail.com:passwd2

    # default relayhost
    [smtp.gmail.com]:587 default_account[@]gmail.com:default_passwd

/etc/postfix/sender_relay:
    account1[@]gmail.com [smtp.gmail.com]:587
    account2[@]gmail.com [smtp.gmail.com]:587

Create maps:

postmap sasl_passwd sender_relay

Restart postfix and test:

To send an email from account1[@]gmail.com, use sendmail with the -f sender option (set the envelope sender address):

sendmail -f account1[@]gmail.com -t <<EOF
To: barney[@]example.net
Subject: Hey, I successfully configured Postfix with sender-dependent SASL authentication!
Content-type: text/html

<b>Isn't this awesome?</b>
EOF

as of 2/2015:
https://gist.github.com/zmwangx/2c56aa32be68daf48c2f

[ view entry ] ( 1542 views )   |  print article

---

// install express globally
$npm install -g express-generator

// create a new project using handlebars for views
$express -hbs "node-chat"

// cd into "node-chat" and execute:
$npm install

// add suport for socket.io
$npm install socket.io --save


// output versions
[acool@localhost node-chat]$ node --version
v0.10.33
[acool@localhost node-chat]$ npm --version
1.3.6
[acool@localhost node-chat]$ express --version
4.11.1

// make sure daemon (dev only) is installed and run:
// (I think you can also do npm start or node bin/www)
[acool@localhost node-chat]$ nodemon bin/www 

// finally go to browser and type http://localhost:3000
// ...socket.io sample to come.

[ view entry ] ( 1447 views )   |  print article

---

You can experiment with Gearman quickly right from the command line:
Launch the agent, the Gearman daemon:

$ sudo /usr/sbin/gearmand --daemon

Run a worker with the command-line utility gearman. The worker needs a name and can run any command-line utility. For example, you can create a worker to list the contents of a directory. The -f argument names the function the worker is providing:

$ gearman -w -f ls -- ls -lh

The last piece of the puzzle is a producer, or a job that generates lookup requests. You can generate a request with gearman, too. Again, use the -f option to spell out which service you want help from:

$ gearman -f ls < /dev/null
drwxr-xr-x@ 43 supergiantrobot  staff   1.4K Nov 15 15:07 gearman-0.6.0
-rw-r--r--@  1 supergiantrobot  staff    29K Oct  1 04:44 gearman-0.6.0.tgz
-rw-r--r--@  1 supergiantrobot  staff   5.8K Nov 15 15:32 gearman.html
drwxr-xr-x@ 32 supergiantrobot  staff   1.1K Nov 15 14:04 gearmand-0.10
-rw-r--r--@  1 supergiantrobot  staff   5.3K Jan  1  1970 package.xml
drwxr-xr-x  47 supergiantrobot  staff   1.6K Nov 15 14:45 pecl-gearman

source (as of 25-10-2014)
http://www.ibm.com/developerworks/opens ... p-gearman/

[ view entry ] ( 1627 views )   |  print article

---

 /*********************************************************
 |
 | Creates Ajax-like request
 |
 *********************************************************/
 function sendRequest($params,$url)
 {
  $postdata = http_build_query($params);
  $opts = array('http' =>
      array(
          'method'  => 'POST',
          'header'  => "Content-type: application/x-www-form-urlencoded \r\n".
                       "X-Requested-With: XMLHttpRequest \r\n",
          'content' => $postdata
      )
  );
  $context  = stream_context_create($opts);
  return json_decode(
              file_get_contents($url.time(), false, $context)
          );
 }

   $params=array(
           'email' => 'me[at]example.com',
           'choCountry' => 'Mexico',
           'zip' => '91744',
       );
   $url= 'http://www.barney-example.com/subscribe'; 
   $data = sendRequest($params,$url); 

 

[ view entry ] ( 1598 views )   |  print article

---

// replacing commas for pipes in csv file
sed 's/,/|/g' original.csv > piped.txt

// alternate syntax to replace commas for pipes
cat original.csv | sed 's/,/|/g' > piped.txt

// printing lines that contain "Angel"
sed -n '/Angel/p' names.txt
grep "Angel" names.txt

// printing lines that contain "Angel" along with line number
cat -n names.txt | sed -n '/Angel/p'
grep -n "Angel" names.txt

// ...case-insensitive
cat -n names.txt | sed -n '/Angel/Ip'
grep -ni "Angel" names.txt

Finds all files and replace single quotes with double quoutes in place,sed is always greedy.

 find ./ -type f -exec sed -i -r "s/'playlist_us([\.a-zA-Z0-9]*)'/\"playlist_us\1\"/" {} \;

5/10/2018 - looks like the following is another way to accomplish the same crap

[acool@acool2 greenentre]$ find public/ -type f | xargs sed -i 's/\/6280\/Entre/\/6280\/greenEntre/g'

5/10/2018 - I also found the following interesting

grep -rl 'SearchString' ./ | xargs sed -i 's/REPLACESTRING/WITHTHIS/g'

[ view entry ] ( 1401 views )   |  print article

---

This is a working draft, like lots of things in this site. For dev purposes firewalld was turned off.

Cluster VIP:172.16.1.213

TODO: VRRP failover setup for load balancer (keepalived)
ALSO: It looks like I configured net.ipv4.ip_forward=1 in load balancer but failed to document it, check this when doing a new load balancer.

#####################Edge01 Configuration (loadbalancer 1)#########################
//keepalived.conf
! Configuration File for keepalived

global_defs {
#   notification_email {
#     me[at]example.net

#   }
#   notification_email_from not-replay[at]example.net
#   smtp_server 192.168.200.1
#   smtp_connect_timeout 30
   router_id LVS_DEVEL
}

vrrp_instance VI_1 {
    state MASTER
    interface eth0
    virtual_router_id 51
    priority 100
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
    #    172.16.1.213
    #    172.16.1.254
    }
}

virtual_server 172.16.1.213 8098  {
    delay_loop 6
    lb_algo wlc
    lb_kind DR
    nat_mask 255.255.255.0
    persistence_timeout 50
    protocol TCP

    real_server 172.16.1.113 8098 {
        weight 1
        TCP_CHECK {
         connect_timeout 3
         connect_port 8098
        }
    }

    real_server 172.16.1.112 8098 {
        weight 100
        TCP_CHECK {
        connect_timeout 3
       connect_port 8098
        }
    }

    real_server 172.16.1.111 8098 {
        weight 100
        TCP_CHECK {
         connect_timeout 3
         connect_port 8098
        }
    }
}

//ifconfig (secondary address for VIP)
[acool@edge01 ~]$ ifconfig
eth0      Link encap:Ethernet  HWaddr 00:24:54:3A:66:4D
          inet addr:172.16.1.200  Bcast:172.16.1.255  Mask:255.255.255.0
          inet6 addr: fe80::224:54ff:fe3a:664d/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:385 errors:0 dropped:0 overruns:0 frame:0
          TX packets:243 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:37042 (36.1 KiB)  TX bytes:35302 (34.4 KiB)

eth0:0    Link encap:Ethernet  HWaddr 00:24:54:3A:66:4D
          inet addr:172.16.1.213  Bcast:172.16.1.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:4 errors:0 dropped:0 overruns:0 frame:0
          TX packets:4 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:240 (240.0 b)  TX bytes:240 (240.0 b)

[acool@edge01 ~]$ ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
    link/ether 00:24:54:3a:66:4d brd ff:ff:ff:ff:ff:ff
    inet 172.16.1.200/24 brd 172.16.1.255 scope global eth0
    inet 172.16.1.213/24 brd 172.16.1.255 scope global secondary eth0:0
    inet6 fe80::224:54ff:fe3a:664d/64 scope link
       valid_lft forever preferred_lft forever


#####################Real Server 2 ( 99% same output for other real servers) #########################
//DR-IPVS file
#!/bin/bash

VIP=172.16.1.213
host=`/bin/hostname`

/sbin/ifconfig lo down
/sbin/ifconfig lo up
echo 1 > /proc/sys/net/ipv4/conf/lo/arp_ignore
echo 2 > /proc/sys/net/ipv4/conf/lo/arp_announce
echo 1 > /proc/sys/net/ipv4/conf/all/arp_ignore
echo 2 > /proc/sys/net/ipv4/conf/all/arp_announce


/sbin/ifconfig lo:1 $VIP netmask 255.255.255.255 up
/sbin/route add -host $VIP dev lo:1


exit 1

//ifconfig
[acool@app02 ~]$ ifconfig
ens1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 172.16.1.112  netmask 255.255.255.0  broadcast 172.16.1.255
        inet6 fe80::216:d4ff:fe45:8ae1  prefixlen 64  scopeid 0x20<link>
        ether 00:16:d4:45:8a:e1  txqueuelen 1000  (Ethernet)
        RX packets 564  bytes 53931 (52.6 KiB)
        RX errors 0  dropped 0  overruns 0  frame 1
        TX packets 428  bytes 57911 (56.5 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
        device interrupt 16

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 0  (Local Loopback)
        RX packets 13  bytes 1360 (1.3 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 13  bytes 1360 (1.3 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

lo:1: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 172.16.1.213  netmask 255.255.255.255
        loop  txqueuelen 0  (Local Loopback)

[acool@app02 ~]$
[acool@app02 ~]$
[acool@app02 ~]$ ip address
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet 172.16.1.213/32 scope global lo:1
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: ens1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000
    link/ether 00:16:d4:45:8a:e1 brd ff:ff:ff:ff:ff:ff
    inet 172.16.1.112/24 brd 172.16.1.255 scope global ens1
       valid_lft forever preferred_lft forever
    inet6 fe80::216:d4ff:fe45:8ae1/64 scope link
       valid_lft forever preferred_lft forever

edge01 verification (keealived load balancer):

[acool@edge01 ~]$
[acool@edge01 ~]$
[acool@edge01 ~]$ sudo ipvsadm
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
  -> RemoteAddress:Port           Forward Weight ActiveConn InActConn
TCP  172.16.1.213:8098 wlc persistent 50
  -> 172.16.1.111:8098            Route   100    1          0
  -> 172.16.1.112:8098            Route   100    0          0
  -> 172.16.1.113:8098            Route   1      0          0
[acool@edge01 ~]$
[acool@edge01 ~]$
[acool@edge01 ~]$

Riak ring verification:

[acool@app02 ~]$
[acool@app02 ~]$
[acool@app02 ~]$ sudo riak-admin member_status
================================= Membership ==================================
Status     Ring    Pending    Node
-------------------------------------------------------------------------------
valid      32.8%      --      'riak@172.16.1.111'
valid      32.8%      --      'riak@172.16.1.112'
valid      34.4%      --      'riak@172.16.1.113'
-------------------------------------------------------------------------------
Valid:3 / Leaving:0 / Exiting:0 / Joining:0 / Down:0
[acool@app02 ~]$
[acool@app02 ~]$
[acool@app02 ~]$
[acool@app02 ~]$ sudo riak-admin ring-status
================================== Claimant ===================================
Claimant:  'riak@172.16.1.113'
Status:     up
Ring Ready: true

============================== Ownership Handoff ==============================
No pending changes.

============================== Unreachable Nodes ==============================
All nodes are up and reachable

[acool@app02 ~]$

Finally, storing data in riak:

Angels-Mac-mini:~ webmaster$ curl -v -XPUT 172.16.1.213:8098/buckets/test-bucket/keys/friends?returnbody=true  -H "Content-Type: application/json" -d '{"Name":"Angel Cool"}'

Fetching data:

http://172.16.1.213:8098/buckets/test-bucket/keys/friends

Or using any of the real servers:

http://172.16.1.111:8098/buckets/test-bucket/keys/friends

Adding another node at a later time:

[webmaster@dev ~]$ sudo riak-admin cluster join riak@172.16.1.111
[webmaster@dev ~]$ sudo riak-admin cluster plan
[webmaster@dev ~]$ sudo riak-admin cluster commit

If plan does not look good:

[webmaster@dev ~]$ sudo riak-admin cluster clear

Riak must be bound to all interfaces: 0.0.0.0:8098

[aesteban@localhost ~]$ 
[aesteban@localhost ~]$ riak-admin status | grep riak_kv_version
riak_kv_version : <<"1.4.7-0-g5daeedd">>
[aesteban@localhost ~]$ 

[ view entry ] ( 1766 views )   |  print article

---

Here is a guide for setting up SFTP users who’s access is restricted to their home directory.

Add the following to the end of the /etc/ssh/sshd_config file:

Subsystem sftp internal-sftp

# This section must be placed at the very end of sshd_config
Match Group sftponly
    ChrootDirectory %h
    ForceCommand internal-sftp
    AllowTcpForwarding no

This means that all users in the ‘sftponly’ group will be chroot’d to their home directory, where they only will be able to run internal SFTP processes.

Now you can create the group sftponly by running the following command:

$ groupadd sftponly

Set a user’s group:

$ usermod steve -g sftponly

To deny SSH shell access, run the following command:

$ usermod steve -s /bin/false

And set the user’s home directory:

$ usermod steve -d /folder

Finally, you probably need to restart SSH

$ service ssh restart

The SSH part should now be in order, but you should make sure that file permissions also are correct. If the chroot environment is in a user’s home directory both /home and /home/username must be owned by root and should have permissions along the lines of 755 or 750.

In other words, every folder leading up to and including the home folder must be owned by root, otherwise you will get the following error after logging in:

Write failed: Broken pipe
Couldn't read packet: Connection reset by peer

--------------------------------------------------
Credit (link as of 8-22-2014):
https://bensmann.no/restrict-sftp-users-to-home-folder/
Thanks Mr. Bensmann

NOTE: It's on my bucket list to test this.

[ view entry ] ( 1468 views )   |  print article

---

<<First <Back | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | Next> Last>>

Page Generated in 0.0556 seconds | Blog Views: 330877