Bash/Get ancestry

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This simple one-liner will output your full ancestry, starting from you and going up to init.
 
This simple one-liner will output your full ancestry, starting from you and going up to init.
If you don't have permission to read a link, a '?' will be shown.
+
If you don't have permission to read a symlink, a '?' will be shown.
  
 
<source lang="bash">
 
<source lang="bash">
 
PID=$$; until [ $PID -eq 0 ]; do BIN=$(readlink /proc/$PID/exe || echo "?"); echo "$PID: $BIN"; PID=$(ps -ef | awk "\$2==$PID {print \$3}"); done
 
PID=$$; until [ $PID -eq 0 ]; do BIN=$(readlink /proc/$PID/exe || echo "?"); echo "$PID: $BIN"; PID=$(ps -ef | awk "\$2==$PID {print \$3}"); done
 
</source>
 
</source>

Revision as of 17:04, 14 February 2013

This simple one-liner will output your full ancestry, starting from you and going up to init. If you don't have permission to read a symlink, a '?' will be shown.

PID=$$; until [ $PID -eq 0 ]; do BIN=$(readlink /proc/$PID/exe || echo "?"); echo "$PID: $BIN"; PID=$(ps -ef | awk "\$2==$PID {print \$3}"); done
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