postIt http://lakm.us/postit Post-It sticky notes with PasteBin sense Thu, 08 Mar 2012 04:49:45 +0000 http://wordpress.org/?v=2.9 en hourly 1 Check ssh key RSA fingerprint: $ ss … http://lakm.us/postit/2012/03/check-ssh-key-rsa-fingerprint-ss/ http://lakm.us/postit/2012/03/check-ssh-key-rsa-fingerprint-ss/#comments Thu, 08 Mar 2012 04:49:45 +0000 Arif http://lakm.us/postit/2012/03/check-ssh-key-rsa-fingerprint-ss/ Check ssh key RSA fingerprint:

$ ssh-keygen -l -f /home/myusername/.ssh/id_rsa.pub
7b:e5:6f:a7:xx:xx:xx:xx:xx:xx:xx:xx:8b:57:xx:xx /home/myusername/.ssh/id_rsa.pub (RSA)
]]> http://lakm.us/postit/2012/03/check-ssh-key-rsa-fingerprint-ss/feed/ 0 Running separate version of wine in sepa … http://lakm.us/postit/2012/01/running-separate-version-of-wine-in-sepa/ http://lakm.us/postit/2012/01/running-separate-version-of-wine-in-sepa/#comments Sat, 28 Jan 2012 01:35:25 +0000 Arif http://lakm.us/postit/2012/01/running-separate-version-of-wine-in-sepa/ Running separate version of wine in separate config directory (to isolate errors of running or installation failure)

env WINEPREFIX="/home/arif/.wine-newapps" /usr/local/bin/wine-1.1.31/usr/bin/wine /home/arif/.wine-newapps/drive_c/Program\ Files/newapps/newapps.exe
]]> http://lakm.us/postit/2012/01/running-separate-version-of-wine-in-sepa/feed/ 0 grep omit empty lines: cat | grep -v … http://lakm.us/postit/2012/01/grep-omit-empty-linescat-grep-v/ http://lakm.us/postit/2012/01/grep-omit-empty-linescat-grep-v/#comments Wed, 25 Jan 2012 06:44:07 +0000 Arif http://xp-racy.lan/postit/2012/01/grep-omit-empty-linescat-grep-v/ grep omit empty lines:

cat <something> | grep -v "^$"

I keep forgetting this regexp of “match expression at the star of the line”: the “^”

]]> http://lakm.us/postit/2012/01/grep-omit-empty-linescat-grep-v/feed/ 0 Custom run level init.d script: start … http://lakm.us/postit/2012/01/custom-run-level-init-d-scriptstart/ http://lakm.us/postit/2012/01/custom-run-level-init-d-scriptstart/#comments Wed, 11 Jan 2012 09:50:01 +0000 Arif http://xp-racy.lan/postit/?p=142 Custom run level init.d script:

startup script on run level 0 and 6, as 34th start only e.g.

update-rc.d which-tty start 34 0 6 .

will create

/etc/rc0.d/S34which-tty
/etc/rc6.d/S34which-tty
]]> http://lakm.us/postit/2012/01/custom-run-level-init-d-scriptstart/feed/ 0 Checking whether /dev/video0 or /dev/tty … http://lakm.us/postit/2012/01/checking-whether-devvideo0-or-devtty/ http://lakm.us/postit/2012/01/checking-whether-devvideo0-or-devtty/#comments Tue, 10 Jan 2012 06:39:59 +0000 Arif http://xp-racy.lan/postit/?p=139 Checking whether /dev/video0 or /dev/ttyUSB0 exists or not (module is installed & probed). They're recognized as "character special file" in bash

[ -b /dev/ttyUSB0 ] && echo "char special file found" || echo "char special file not found"

Compare the above to "block special file"

[ -b /dev/sda ] && echo "block special file found" || echo "block special file not found"
]]> http://lakm.us/postit/2012/01/checking-whether-devvideo0-or-devtty/feed/ 0 Socket monitoring by watching receive an … http://lakm.us/postit/2011/08/socket-monitoring-by-watching-receive-an/ http://lakm.us/postit/2011/08/socket-monitoring-by-watching-receive-an/#comments Wed, 10 Aug 2011 08:03:50 +0000 Arif http://xp-racy.lan/postit/?p=136 Socket monitoring by watching receive and send queue every 5 seconds

$ while true; do netstat -tn; sleep 5; clear; done

Result:

 
Active Internet connections (w/o servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State
tcp        0      0 10.238.133.152:43941    98.136.48.103:5050      ESTABLISHED
tcp        1      0 10.238.133.152:42541    8.27.254.249:80         CLOSE_WAIT
tcp        1      0 10.238.133.152:34355    184.73.222.16:80        CLOSE_WAIT
tcp        0      0 10.238.133.152:43210    199.59.148.87:443       ESTABLISHED
tcp        0    229 10.238.133.152:43209    199.59.148.87:443       ESTABLISHED

This is to emulate combination of watch and ss in Solaris, more or less same result

$ watch -n 5 ss -t
State      Recv-Q Send-Q      Local Address:Port          Peer Address:Port
ESTAB      0      0          10.238.133.152:36045       74.125.224.250:https
ESTAB      0      0          10.238.133.152:36044       74.125.224.250:https
CLOSE-WAIT 1      0          10.238.133.152:59622      174.129.233.179:www
ESTAB      0      0          10.238.133.152:43941        98.136.48.103:mmcc
CLOSE-WAIT 38     0          10.238.133.152:49300        199.59.148.87:https
ESTAB      0      0          10.238.133.152:33626       74.125.224.191:https
CLOSE-WAIT 1      0          10.238.133.152:37621        208.46.163.81:www
]]> http://lakm.us/postit/2011/08/socket-monitoring-by-watching-receive-an/feed/ 0 Krusader crash giving signal 11: 1. rep … http://lakm.us/postit/2011/07/krusader-crash-giving-signal-111-rep/ http://lakm.us/postit/2011/07/krusader-crash-giving-signal-111-rep/#comments Tue, 12 Jul 2011 04:30:05 +0000 Arif http://xp-racy.lan/postit/?p=133 Krusader crash giving signal 11:
1. replace .kde/share/config/krusaderrc with original one from initial installation
2. remove other files under it

When installing new, we only need to copy :

$ ls .kde/share/apps/krusader/
krusaderui.rc    useractions.xml
]]> http://lakm.us/postit/2011/07/krusader-crash-giving-signal-111-rep/feed/ 0 tcpdump default truncate to 68 bytes sna … http://lakm.us/postit/2011/06/tcpdump-default-truncate-to-68-bytes-sna/ http://lakm.us/postit/2011/06/tcpdump-default-truncate-to-68-bytes-sna/#comments Wed, 15 Jun 2011 04:57:28 +0000 Arif http://xp-racy.lan/postit/?p=132 tcpdump default truncate to 68 bytes snapshot length (snaplen). Use -s 0 to capture all packet length

tcpdump -s 0 -w /tmp/my240.dump -i eth1 port 2000
]]> http://lakm.us/postit/2011/06/tcpdump-default-truncate-to-68-bytes-sna/feed/ 0 Unix time conversion # EPOCH=129751 … http://lakm.us/postit/2011/02/unix-time-conversion-epoch129751/ http://lakm.us/postit/2011/02/unix-time-conversion-epoch129751/#comments Sat, 12 Feb 2011 13:52:10 +0000 Arif http://xp-racy.lan/postit/?p=125 Unix time conversion

$ EPOCH=1297515579843
$ echo $EPOCH | cut -c1-10
1297515579
 
$ echo $EPOCH | cut -c1-10 | awk '{print strftime("%c",$1)}'
Sat 12 Feb 2011 07:59:39 PM WIT
]]> http://lakm.us/postit/2011/02/unix-time-conversion-epoch129751/feed/ 0 Read CSS padding clockwise: padding:2 … http://lakm.us/postit/2011/01/read-css-padding-clockwisepadding2/ http://lakm.us/postit/2011/01/read-css-padding-clockwisepadding2/#comments Tue, 04 Jan 2011 04:26:29 +0000 Arif http://xp-racy.lan/postit/?p=123 Read CSS padding clockwise:

padding:25px 50px 75px 100px;
shorthand property for:

    top padding is 25px
    right padding is 50px
    bottom padding is 75px
    left padding is 100px

padding:25px 50px 75px;

    top padding is 25px
    right and left paddings are 50px
    bottom padding is 75px

padding:25px 50px;

    top and bottom paddings are 25px
    right and left paddings are 50px

padding:25px;
all four paddings are 25px

]]> http://lakm.us/postit/2011/01/read-css-padding-clockwisepadding2/feed/ 0