Using proxychains to do apt-get update in ubuntu 12.04.2

sudo proxychains  apt-get update

gives following error

ERROR: ld.so: object 'libproxychains.so.3' from LD_PRELOAD cannot be preloaded: ignored.

How can I avoid this error?

  • I've found the solution, the execution file in /usr/bin/proxychains contains a link to LD_PRELOAD, which should not be libproxychains.so.3 but should be libproxychains.so. Of course, assuming you have /usr/lib/libproxychains.so correctly linking to /usr/lib/libproxychains.so.3
    – Saeed
    May 11, 2013 at 3:47

4 Answers 4


You must change

export LD_PRELOAD=libproxychains.so.3


export LD_PRELOAD=/usr/lib/libproxychains.so.3

in /usr/bin/proxychains

or use find /usr/lib/ -name libproxychains.so.3 -print to get the right file path.

  • In peppermint 4.0, it should be /usr/lib/i386-linux-gnu/libproxychains.so.3
    – diyism
    Dec 11, 2013 at 7:25
  • 2
    "proxychains-ng" or proxychains4 have no problem like this.
    – diyism
    Dec 11, 2013 at 9:28
  • If setting proxy_dns, the same needs to be done to `which proxyresolv` as well.
    – Mikhail T.
    Nov 23, 2018 at 23:35

Although the error goes away when setting

export LD_PRELOAD=/usr/lib/libproxychains.so.3

in /usr/bin/proxychains there is no such file in that location on Ubuntu. the link resides in /usr/lib/x86_64-linux-gnu/ on a 64bit system and /usr/lib/i386-linux-gnu/ (i think) on a 32bit system. The link points to the file libproxychains.so.3.0.0 in the same directory. The change should be

export LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libproxychains.so.3

if on 64bit

export LD_PRELOAD=/usr/lib/i386-linux-gnu/libproxychains.so.3

if on 32bit Ubuntu and derivatives.


In my case,

export LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libproxychains.so.3

did not work. I also added this line to my .bashrc and refreshed it by source ~/.bashrc

Solution: You need to add/edit it to proxychains by:

sudo gedit /usr/bin/proxychains

if on 32bit Ubuntu and derivatives, replace x86_64-linux-gnu with i386-linux-gnu


You can just add

export LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libproxychains.so.3

in .bashrc instead of run proxychains bash in terminal.

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