Use tracepath instead of traceroute

By -
Just wanted to note myself of this one,

$ tracepath 210.213.128.14
1: centos (10.0.1.19) 0.094ms pmtu 1500
1: maximum (10.0.1.1) 1.327ms
1: maximum (10.0.1.1) 1.866ms
2: dsl.49.145.0.1.pldt.net (49.145.0.1) 55.341ms
3: 122.2.135.37.pldt.net (122.2.135.37) 50.527ms
4: 210.213.135.17.static.pldt.net (210.213.135.17) 73.554ms
5: 210.213.128.62.static.pldt.net (210.213.128.62) 79.921ms
6: 210.213.129.33.static.pldt.net (210.213.129.33) 83.518ms
7: 210.213.128.45.static.pldt.net (210.213.128.45) 71.558ms
8: 210.213.131.93.static.pldt.net (210.213.131.93) 71.437ms asymm 9
9: 210.213.128.14.static.pldt.net (210.213.128.14) 211.873ms reached
Resume: pmtu 1500 hops 9 back 247

tracepath can be run without the need of any super user privileges.


Comments

Post a Comment

Popular posts from this blog

Using sed with backreference as the replacement pattern

By -
Tinkering with sed, I have manage to try using regular expressions using backreferences using the most common \N where N is the number of position inside the parenthesis. Searches and replaces the zoo.color to zoo['color'] or zoo.animals to zoo['animals']: cat zoo.js | sed -E "s/(zoo)(\.)([a-zA-Z0-9]*)/\1['\3']/g"|less \1 = is the characters inside the first parenthesis w/c is the zoo \3 = is the characters inside the third parenthesis which involves alpha-numeric -E will interpret as regular expressions as extended (modern) regular expressions rather than basic regular expressions (BRE's) Another example, you can use this for replacing such a string let say, in a SQL statement, example SQL string: CREATE DEFINER=`mysqluser`@`%` FUNCTION `total`(cost DOUBLE, income DOUBLE, lng2 DOUBLE) RETURNS double And you wanted to remove  DEFINER=`mysqluser`@`%`  and allow  FUNCTION  to be a dynamic string so you'll just need to catch tha...
Read more

Use Shell Editor for Eclipse for editing bash, ksh, csh in Unix/Linux system

By -
Image
I found ShellEd when googling for any shell editor. It was trouble at first because there's no  how-to that directs me, where I expect to have a direct link that I can copy-en-paste to my Eclipse for installation. So what I did, I download ShellEd (as of this writing file version ShellEd-Update-2.0.0_M3.zip) from sourceforge.net and install, as required, the Linux Tools . After installing Linux Tools, I then locate thru archive the ShellEd zip file and install it successfully. It works good and I feel satisfied with this cool tool to be embedded in eclipse. The sample attached shell script is from JBoss twiddle. It does supports syntax highlighting, intellisense which is cool. Hope this helps.
Read more

LVM: How to remove a volume using pvremove

By -
First, I encountered this error "Can't pvremove physical volume "/dev/sdc1" of volume group "nova-volumes" without -ff" (I'm actually using OpenStack but it's another story). So to remove this, do first, ~# pvscan   PV /dev/sdb1   VG nova-volumes    lvm2 [1.82 TiB / 1.82 TiB free]   PV /dev/sda5   VG cloudmaster     lvm2 [297.85 GiB / 12.00 MiB free]   PV /dev/sdc1                      lvm2 [1.82 TiB]   Total: 3 [3.93 TiB] / in use: 2 [2.11 TiB] / in no VG: 1 [1.82 TiB] Then, when I do, ~# pvremove /dev/sdc1  Can't pvremove physical volume "/dev/sdc1" of volume group "nova-volumes" without -ff So I need to, ~# vgreduce nova-volumes /dev/sdc1   Removed "/dev/sdc1" from volume group "nova-volumes" Then do `pvscan` again, ~# pvscan   PV /dev/sdb1   VG nova-volumes    lvm2 [1.82 TiB / 1.82 TiB free]   PV /dev/sda5   VG clou...
Read more