Cheatsheets

You can obtain latest list from sys/sys/proc.h:

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 * Below is a key of locks used to protect each member of struct proc.  The
 * lock is indicated by a reference to a specific character in parens in the
 * associated comment.
 *      * - not yet protected
 *      a - only touched by curproc or parent during fork/wait
 *      b - created at fork, never changes
 *              (exception aiods switch vmspaces, but they are also
 *              marked 'P_SYSTEM' so hopefully it will be left alone)
 *      c - locked by proc mtx
 *      d - locked by allproc_lock lock
 *      e - locked by proctree_lock lock
 *      f - session mtx
 *      g - process group mtx       
 *      h - callout_lock mtx
 *      i - by curproc or the master session mtx
 *      j - locked by sched_lock mtx
 *      k - only accessed by curthread
 *      l - the attaching proc or attaching proc parent
 *      m - Giant
 *      n - not locked, lazy
 *      o - ktrace lock
 *      p - select lock (sellock)
 *      q - td_contested lock
 *      r - p_peers lock
 *      x - created at fork, only changes during single threading in exec
 *      z - zombie threads/ksegroup lock

Just for fun:

Add the following to your /etc/csh.cshrc:
setenv LSCOLORS ExGxFxdxCxegedabagExEx
setenv CLICOLOR yes
set prompt = ‘[%B%n@%m%b] %B%~%b%# ’
set autolist
bindkey “^W” backward-delete-word
bindkey -k up history-search-backward
bindkey -k down history-search-forward

And execute:
sed -i.bak -E s/set\ prompt/#set\ prompt/g /root/.cshrc

Then re login.

Source code cleanup:

sed -i '' -E s/\ \	/\	/g *.c *.h
sed -i '' -E s/^\ \ \ \ \ \ \ \ /\	/g *.c *.h
sed -i '' -E s/\	\ \ \ \ \ \ \ \ /\	\	/g *.c *.h
sed -i '' -E s/\ +\$//g *.c *.h

grep cgi-bin scripttime | cut -f6,8 -d’ ’ | sed -E s/\\\?.+//g | grep cgi-bin | sort | uniq -c | sort > statis

Where scripttime is a log with %T (script execution time) log. The above command line will obtain execution time, script name from log, then sort it by the execution time, then have a counted unique.

Top ten established HTTP connection from IP to our box: (IP=127.0.0.1)

netstat -na | grep “127\.0\.0\.1\.80 " | grep ESTABLISHED | cut -c43- |cut -f1-4 -d’.’ | sort | uniq -c | sort -nr | head -10

Merge FreeBSD-CURRENT changes to delphijfork:
retag `cvs -d /home/fcvs rdiff -rHEAD -rDELPHIJ_FORK_LASTMERGE src | grep Index: | awk ‘{print $2;}’ | grep src`

It turns that I need to set up my own cvsup server so I can deploy my fork elsewhere. Here comes how.

A Dell Latitude D600 computer with Windows 2003 Server Enterprise Edition is experiencing problem when installing Windows Update from website. By downloading the hotfix, and trying to install it, it fails with “Data Error, 0x8000007d”

Mutt is a text driven Mail User Agent (MUA). It supports many useful features, including IMAP/POP3 (even TLS) support, and it is very neat.

Here is my configuration file.