Author Archives : techstruggles

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Remote suggested url from chrome’s bar as you type

This entry was posted in Linux Mac Web Stuff on April 13, 2015 by techstruggles.

On mac: Fn + Shift + Del.   else: Shift + Del   once you highlight (up/down arrow keys) the suggestion.

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Gray disabled sound icon on mac

This entry was posted in Mac on April 11, 2015 by techstruggles.

Fix WITHOUT reboot:   chown -R _coreaudiod:admin /Library/Preferences/Audio # Fix the dynamic linkers using the following command sudo update_dyld_shared_cache -force # Restart the coreaudio service sudo killall coreaudiod

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apache unresponsive

This entry was posted in Linux Sys admin Web Stuff on March 19, 2015 by techstruggles.

apache2 hangs.  Check logs, see: [error] could not make child process 16190 exit, attempting to continue anyway check your php files (such as drupal’s includes/common.inc and sites/all/modules/advagg/advagg.missing.inc ) for: ignore_user_abort Try to comment all out, and restart apache.

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`which` in unix not returning anything

This entry was posted in Linux Sys admin on March 16, 2015 by techstruggles.

which <command>   returns nothing.  Maybe it’s alias, so:   type <command>   will tell you what the alias is for.

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apt-get upgrade getting: Err http://security.ubuntu.com raring-security/universe amd64 Packages 404 Not Found [IP: 91.189.91.15 80]

This entry was posted in Linux Sys admin on February 17, 2015 by techstruggles.

To make apt-get update work, we simply need to edit /etc/apt/sources.list and update all URLs from security.ubuntu.com and archive.ubuntu.com to point to old-releases.ubuntu.com, as per the following sed command: sudo sed -i.bak -r ‘s/(archive|security).ubuntu.com/old-releases.ubuntu.com/g’ /etc/apt/sources.list After this, sudo apt-get update seems to run without a hitch. Of course if you do this, you’re accepting to […]

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ssh warning

This entry was posted in Linux Sys admin on January 11, 2015 by techstruggles.

When ssh, if you get:   @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @    WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!     @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY! Someone could be eavesdropping on you right now (man-in-the-middle attack)! It is also possible that a host key has just been changed. The fingerprint for the DSA […]

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Drupal site not loading

This entry was posted in drupal on November 17, 2014 by techstruggles.

Drupal site just sits there loading and eventually times out?  Check sites/default/settings.php.  In particular, you may be loading stuff that will slow you down/bring your site to a halt.  For instance, try commenting out: $conf[‘cache_backends‘][] = ‘sites/all/modules/memcache_storage/memcache_storage.inc‘; $conf[‘cache_default_class‘] = ‘MemcacheStorage‘; $conf[‘cache_class_cache_form‘] = ‘DrupalDatabaseCache‘; $conf[‘cache_backends‘][] = “sites/all/modules/memcache/memcache.inc“; $conf[‘cache_default_class‘] = ‘MemCacheDrupal‘; $conf[‘cache_class_cache_form‘] = ‘DrupalDatabaseCache‘; Or any one that […]

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Upgrade drupal manually

This entry was posted in drupal on November 15, 2014 by techstruggles.

To update drupal manually, download and unzip drush, then go into the directory where you unzipped, and run: ./drush pm-update projects drupal-7.33 -r  <path to your drupal installation>   I later had to rebuild content access permissions. With drush:   sudo ./drush php-eval ‘node_access_rebuild();’ -r<path to your drupal installation> -y -l http://<url> -v I had […]

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Smart execute with xargs

This entry was posted in scripting Sys admin on October 31, 2014 by techstruggles.

if you have a large file that is too large to pass to xargs, you can bring it up into chunks.  For instance: cat file.txt | xargs -L 3 echo   will execute echo on 3 lines at a time.  

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Find which process has which port

This entry was posted in Linux on October 14, 2014 by techstruggles.

netstat -tulpn

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