2007 Feb 14 - Wed
Trading Site of the Day -- One Option: Option Trading Blog
Pete Stolcers has a blog called OneOption
in which he discussed the theory behind option trades as well as showing real trades.
In his February 13 article, he talks about spreads. He discusses when to get in, how to
get in, what happens when you are close to an expiry date, and examines some considerations
on how to get out. He also discusses how he finds a suitable candidate for a trade.
As part of the analysis, he also examines the overall market situation. By thinking
about the general, followed by some fundamental analsysis, he then generates a 'feeling' as
to where things might go.
So, by what I just mentioned in the last paragraph, he isn't just a technical analsyst.
He does examine each symbol's fundamentals and latest news to help justify his feelings as
to where a trading instrument might be heading.
Initial posts to his blog were few and far between. Perhaps he may maintain more
frequent posts in the here and now. Anyway, there is useful information there for a
practitioner to learn from.
[/Trading/SiteOfTheDay/D200702]
permanent link
Darvas Selections for 2007/02/15
Here are the selections for Thursday. These lists have the Darvas stop calculated in the second column.
|
Start: 2007-01-14 High: 2007-02-08 EOD: 2007-02-14
| Symbol | Stop |
| AFFX | 27.83
| | AKAM | 55.71
| | ALVR | 7.77
| | AMX | 45.76
| | ANAD | 11.40
| | ANF | 82.81
| | APCC | 30.85
| | ARO | 37.06
| | BEN | 121.77
| | BG | 79.85
| | BGC | 48.38
| | BIG | 26.34
| | CBS | 31.91
| | CHINA | 10.63
| | COH | 47.03
| | CVG | 26.50
| | DIS | 34.44
| | DLTR | 33.89
| | EDS | 27.62
| | EMC | 14.38
| | EXC | 62.72
| | EXPE | 21.65
| | FMCN | 85.84
| | GGP | 65.07
| | GT | 25.33
| | HAS | 28.94
| | HCP | 39.60
| | HTZ | 19.95
| | IACI | 39.48
| | IBN | 45.89
| | IFX | 15.68
| | IP | 36.93
| | ITW | 52.21
| | MA | 113.08
| | MCO | 74.82
| | MET | 64.75
| | MNST | 51.39
| | MRVC | 4.19
| | NKE | 100.25
| | NOC | 73.57
| | NT | 29.32
| | NUAN | 12.72
| | PRU | 91.26
| | RHT | 24.47
| | RMBS | 21.49
| | SINA | 34.35
| | SONS | 7.80
| | TGT | 61.13
| | TIF | 40.50
| | TROW | 48.94
| | UBS | 63.33
| | UIS | 9.22
| | URI | 28.25
| | VNO | 132.85
| | WLP | 79.00
| | WYN | 32.65
| | XEL | 24.14
| | XL | 71.56
| | YHOO | 29.88
| | ZMH | 85.00
|
|
Start: 2007-01-14 High: 2007-02-09 EOD: 2007-02-14
| Symbol | Stop |
| AEP | 45.41
| | AGU | 37.05
| | AINV | 23.30
| | AIV | 63.41
| | AL | 52.32
| | AMX | 45.76
| | ARBA | 9.79
| | ARDI | 7.42
| | ATHR | 24.80
| | AVP | 38.64
| | BG | 79.85
| | CBS | 31.91
| | CECO | 28.13
| | CGV | 41.39
| | CHINA | 10.63
| | COH | 47.03
| | CPWR | 8.88
| | CRUS | 8.16
| | DD | 51.00
| | EDS | 27.62
| | EGO | 5.80
| | EXC | 62.72
| | EXPE | 21.65
| | FMCN | 85.84
| | GM | 35.99
| | GT | 25.33
| | HAS | 28.94
| | HTZ | 19.95
| | IRF | 42.99
| | LI | 32.50
| | MA | 113.08
| | MCHP | 36.09
| | MET | 64.75
| | MIR | 35.65
| | MRVC | 4.19
| | NKE | 100.25
| | NUAN | 12.72
| | NVT | 35.17
| | RHT | 24.47
| | SHLD | 180.10
| | SNE | 50.39
| | SONS | 7.80
| | TIF | 40.50
| | TRA | 15.82
| | TSN | 18.67
| | USU | 14.78
| | VRSN | 24.71
| | WYN | 32.65
| | XL | 71.56
| | XLY | 39.72
| | XRX | 17.25
|
|
[/Trading/Darvas/D200702]
permanent link
Darvas Results at EOD 2007/02/14
In comparison, the Dow Jones Industrial Index opened down slightly at 12651,
had a higher high of 12759,
had a higher low (an all positive day) of 12651,
and closed up further at 12741.
If Low is green, then it stayed above the stop level. If Close is green, the symbol closed up for the day.
Start: 2007-01-13 High: 2007-02-07 EOD: 2007-02-13
| Symbol | Open | High | Low | Close | Stop | O->H | O->C |
| ABB | 18.66 | 19.25 | 18.65 | 19.13 | 18.62 | 0.59 | 0.47
| | ACN | 38.72 | 39.25 | 38.69 | 39.20 | 37.86 | 0.53 | 0.48
| | AET | 42.60 | 43.80 | 42.60 | 43.64 | 42.99 | 1.20 | 1.04
| | AFL | 47.95 | 48.02 | 47.64 | 47.90 | 48.71 | 0.07 | -0.05
| | AMKR | 11.41 | 11.98 | 11.32 | 11.76 | 11.40 | 0.57 | 0.35
| | AMP | 61.18 | 63.07 | 61.16 | 62.56 | 59.35 | 1.89 | 1.38
| | AMT | 39.54 | 40.03 | 39.50 | 39.60 | 39.30 | 0.49 | 0.06
| | AN | 23.06 | 23.08 | 22.76 | 23.03 | 22.56 | 0.02 | -0.03
| | ANAD | 12.12 | 12.13 | 11.91 | 12.10 | 11.40 | 0.01 | -0.02
| | ARO | 38.21 | 38.51 | 37.81 | 38.40 | 37.06 | 0.30 | 0.19
| | ATHR | 25.69 | 26.20 | 25.60 | 25.79 | 24.80 | 0.51 | 0.10
| | BEN | 123.16 | 126.00 | 122.95 | 125.59 | 121.77 | 2.84 | 2.43
| | BIG | 26.49 | 26.58 | 26.29 | 26.41 | 26.34 | 0.09 | -0.08
| | BMC | 32.15 | 32.67 | 32.02 | 32.44 | 35.41 | 0.52 | 0.29
| | CAR | 27.00 | 27.16 | 26.90 | 27.05 | 26.76 | 0.16 | 0.05
| | CECO | 29.38 | 29.49 | 29.29 | 29.46 | 28.13 | 0.11 | 0.08
| | CHINA | 10.59 | 10.88 | 10.58 | 10.85 | 10.63 | 0.29 | 0.26
| | CHKP | 24.77 | 25.03 | 24.63 | 24.92 | 24.43 | 0.26 | 0.15
| | CIT | 59.22 | 60.44 | 59.03 | 59.82 | 58.63 | 1.22 | 0.60
| | COH | 48.25 | 49.58 | 47.81 | 49.38 | 47.03 | 1.33 | 1.13
| | COL | 68.45 | 69.22 | 68.40 | 69.22 | 66.18 | 0.77 | 0.77
| | COST | 56.51 | 57.15 | 56.34 | 57.05 | 54.66 | 0.64 | 0.54
| | CRM | 48.90 | 50.13 | 48.78 | 49.88 | 47.82 | 1.23 | 0.98
| | CROX | 53.77 | 54.53 | 53.20 | 53.51 | 57.32 | 0.76 | -0.26
| | CX | 35.88 | 37.14 | 35.72 | 36.95 | 36.37 | 1.26 | 1.07
| | DD | 51.40 | 51.89 | 51.33 | 51.79 | 51.00 | 0.49 | 0.39
| | DISH | 42.14 | 42.50 | 41.93 | 42.04 | 41.53 | 0.36 | -0.10
| | DTV | 23.98 | 24.29 | 23.86 | 23.92 | 24.76 | 0.31 | -0.06
| | EEM | 115.30 | 117.88 | 113.85 | 117.65 | 116.50 | 2.58 | 2.35
| | EFA | 75.66 | 76.40 | 75.63 | 76.32 | 74.51 | 0.74 | 0.66
| | EXPE | 21.68 | 22.49 | 21.64 | 22.27 | 21.65 | 0.81 | 0.59
| | FHN | 43.90 | 44.35 | 43.79 | 43.99 | 44.05 | 0.45 | 0.09
| | FISV | 53.75 | 54.50 | 53.65 | 54.30 | 51.44 | 0.75 | 0.55
| | GGP | 63.59 | 65.20 | 63.10 | 64.72 | 65.07 | 1.61 | 1.13
| | GIGM | 12.20 | 12.55 | 12.16 | 12.39 | 11.95 | 0.35 | 0.19
| | GILD | 70.94 | 71.74 | 70.51 | 71.72 | 71.92 | 0.80 | 0.78
| | GNW | 36.43 | 36.77 | 36.31 | 36.63 | 36.61 | 0.34 | 0.20
| | GR | 49.95 | 50.78 | 49.77 | 50.44 | 48.39 | 0.83 | 0.49
| | HAS | 28.50 | 29.00 | 28.45 | 28.98 | 28.94 | 0.50 | 0.48
| | HCP | 40.25 | 40.33 | 39.68 | 39.83 | 39.60 | 0.08 | -0.42
| | HLT | 36.61 | 37.17 | 36.54 | 36.82 | 37.31 | 0.56 | 0.21
| | HON | 46.51 | 47.65 | 46.20 | 47.54 | 45.90 | 1.14 | 1.03
| | HTZ | 20.40 | 21.32 | 20.28 | 21.22 | 19.95 | 0.92 | 0.82
| | IACI | 39.90 | 40.15 | 39.63 | 39.85 | 39.48 | 0.25 | -0.05
| | IBN | 42.24 | 43.67 | 42.00 | 43.61 | 45.89 | 1.43 | 1.37
| | IFX | 15.98 | 16.24 | 15.95 | 16.18 | 15.68 | 0.26 | 0.20
| | ITW | 52.05 | 52.93 | 52.02 | 52.77 | 50.29 | 0.88 | 0.72
| | JCP | 83.44 | 84.92 | 83.12 | 84.59 | 84.09 | 1.48 | 1.15
| | KEY | 39.00 | 39.49 | 38.93 | 39.37 | 38.97 | 0.49 | 0.37
| | KLIC | 9.63 | 10.00 | 9.63 | 9.95 | 9.09 | 0.37 | 0.32
| | LEH | 83.30 | 84.36 | 82.77 | 83.65 | 84.13 | 1.06 | 0.35
| | LLL | 86.17 | 87.73 | 86.05 | 87.62 | 83.25 | 1.56 | 1.45
| | MCO | 71.10 | 72.18 | 71.07 | 71.68 | 74.82 | 1.08 | 0.58
| | MET | 64.30 | 65.79 | 64.25 | 65.34 | 64.75 | 1.49 | 1.04
| | MIR | 35.45 | 35.97 | 35.38 | 35.69 | 34.61 | 0.52 | 0.24
| | MLS | 26.31 | 26.61 | 26.05 | 26.35 | 26.30 | 0.30 | 0.04
| | MRVC | 4.20 | 4.39 | 4.18 | 4.28 | 4.19 | 0.19 | 0.08
| | NKE | 105.20 | 105.78 | 104.95 | 105.38 | 100.25 | 0.58 | 0.18
| | NOC | 74.60 | 74.96 | 73.84 | 74.48 | 73.57 | 0.36 | -0.12
| | NT | 30.18 | 30.60 | 29.94 | 30.50 | 29.32 | 0.42 | 0.32
| | NTY | 50.90 | 51.76 | 50.59 | 51.20 | 52.32 | 0.86 | 0.30
| | NUAN | 14.25 | 14.46 | 14.08 | 14.40 | 12.72 | 0.21 | 0.15
| | NYT | 25.55 | 25.97 | 25.38 | 25.75 | 25.69 | 0.42 | 0.20
| | PCAR | 70.00 | 72.36 | 69.85 | 72.36 | 69.72 | 2.36 | 2.36
| | PLCM | 33.73 | 34.19 | 33.70 | 34.07 | 32.43 | 0.46 | 0.34
| | RHT | 24.29 | 25.00 | 24.02 | 24.23 | 24.47 | 0.71 | -0.06
| | RTN | 55.48 | 55.48 | 54.95 | 54.96 | 53.22 | 0.00 | -0.52
| | SCUR | 8.80 | 9.14 | 8.80 | 9.05 | 8.84 | 0.34 | 0.25
| | SNV | 32.72 | 33.02 | 32.63 | 32.93 | 32.10 | 0.30 | 0.21
| | SPG | 116.60 | 118.72 | 115.65 | 117.73 | 121.24 | 2.12 | 1.13
| | TGT | 62.10 | 62.60 | 61.90 | 62.44 | 59.88 | 0.50 | 0.34
| | TRN | 40.30 | 41.82 | 40.25 | 41.60 | 39.83 | 1.52 | 1.30
| | TSN | 18.75 | 18.80 | 18.47 | 18.62 | 18.67 | 0.05 | -0.13
| | UBS | 62.57 | 63.35 | 62.47 | 63.31 | 63.33 | 0.78 | 0.74
| | UIS | 9.25 | 9.28 | 9.15 | 9.21 | 9.22 | 0.03 | -0.04
| | URI | 28.48 | 28.80 | 28.35 | 28.74 | 28.25 | 0.32 | 0.26
| | VNO | 133.90 | 135.06 | 132.64 | 133.91 | 132.85 | 1.16 | 0.01
| | WLP | 80.69 | 81.29 | 80.27 | 80.98 | 79.00 | 0.60 | 0.29
| | XL | 73.00 | 73.44 | 72.75 | 73.10 | 71.56 | 0.44 | 0.10
| | XLI | 36.34 | 36.78 | 36.26 | 36.73 | 35.96 | 0.44 | 0.39
| | XLY | 39.65 | 39.87 | 39.58 | 39.82 | 39.72 | 0.22 | 0.17
| | YHOO | 29.69 | 30.86 | 29.64 | 30.66 | 29.88 | 1.17 | 0.97
| | ZMH | 84.09 | 84.96 | 83.92 | 84.62 | 85.00 | 0.87 | 0.53
| | 3775.55 | | | | | 59.88 | 38.89
|
Start: 2007-01-13 High: 2007-02-08 EOD: 2007-02-13
| Symbol | Open | High | Low | Close | Stop | O->H | O->C |
| AFFX | 27.33 | 27.66 | 27.11 | 27.40 | 27.83 | 0.33 | 0.07
| | ALVR | 8.31 | 8.39 | 8.25 | 8.32 | 7.77 | 0.08 | 0.01
| | AMX | 47.83 | 48.67 | 47.79 | 48.50 | 45.76 | 0.84 | 0.67
| | ANAD | 12.12 | 12.13 | 11.91 | 12.10 | 11.40 | 0.01 | -0.02
| | ANF | 81.52 | 82.51 | 81.06 | 82.27 | 82.81 | 0.99 | 0.75
| | APCC | 30.94 | 31.00 | 30.93 | 30.98 | 30.85 | 0.06 | 0.04
| | ARO | 38.21 | 38.51 | 37.81 | 38.40 | 37.06 | 0.30 | 0.19
| | BEN | 123.16 | 126.00 | 122.95 | 125.59 | 121.77 | 2.84 | 2.43
| | BG | 80.15 | 80.55 | 79.86 | 79.92 | 79.85 | 0.40 | -0.23
| | BGC | 50.36 | 51.49 | 50.10 | 50.68 | 48.38 | 1.13 | 0.32
| | BIG | 26.49 | 26.58 | 26.29 | 26.41 | 26.34 | 0.09 | -0.08
| | CBS | 31.98 | 32.27 | 31.95 | 31.99 | 31.91 | 0.29 | 0.01
| | CHINA | 10.59 | 10.88 | 10.58 | 10.85 | 10.63 | 0.29 | 0.26
| | COH | 48.25 | 49.58 | 47.81 | 49.38 | 47.03 | 1.33 | 1.13
| | CVG | 26.34 | 26.60 | 26.26 | 26.55 | 26.50 | 0.26 | 0.21
| | DIS | 34.58 | 34.82 | 34.52 | 34.75 | 34.44 | 0.24 | 0.17
| | DLTR | 33.34 | 34.03 | 33.11 | 34.00 | 32.53 | 0.69 | 0.66
| | EDS | 28.30 | 28.77 | 28.22 | 28.65 | 27.62 | 0.47 | 0.35
| | EMC | 14.56 | 14.77 | 14.40 | 14.70 | 14.38 | 0.21 | 0.14
| | EXC | 63.63 | 64.04 | 63.50 | 63.78 | 62.72 | 0.41 | 0.15
| | EXPE | 21.68 | 22.49 | 21.64 | 22.27 | 21.65 | 0.81 | 0.59
| | FMCN | 80.32 | 81.75 | 79.30 | 79.62 | 85.84 | 1.43 | -0.70
| | GGP | 63.59 | 65.20 | 63.10 | 64.72 | 65.07 | 1.61 | 1.13
| | GT | 24.74 | 25.00 | 24.38 | 24.85 | 25.33 | 0.26 | 0.11
| | HAS | 28.50 | 29.00 | 28.45 | 28.98 | 28.94 | 0.50 | 0.48
| | HCP | 40.25 | 40.33 | 39.68 | 39.83 | 39.60 | 0.08 | -0.42
| | HTZ | 20.40 | 21.32 | 20.28 | 21.22 | 19.95 | 0.92 | 0.82
| | IACI | 39.90 | 40.15 | 39.63 | 39.85 | 39.48 | 0.25 | -0.05
| | IBN | 42.24 | 43.67 | 42.00 | 43.61 | 45.89 | 1.43 | 1.37
| | IFX | 15.98 | 16.24 | 15.95 | 16.18 | 15.68 | 0.26 | 0.20
| | IP | 37.00 | 37.49 | 36.91 | 37.33 | 36.93 | 0.49 | 0.33
| | ITW | 52.05 | 52.93 | 52.02 | 52.77 | 50.29 | 0.88 | 0.72
| | MA | 104.21 | 108.82 | 104.10 | 108.02 | 113.08 | 4.61 | 3.81
| | MCO | 71.10 | 72.18 | 71.07 | 71.68 | 74.82 | 1.08 | 0.58
| | MET | 64.30 | 65.79 | 64.25 | 65.34 | 64.75 | 1.49 | 1.04
| | MNST | 53.31 | 53.92 | 53.00 | 53.63 | 51.39 | 0.61 | 0.32
| | MRVC | 4.20 | 4.39 | 4.18 | 4.28 | 4.19 | 0.19 | 0.08
| | NKE | 105.20 | 105.78 | 104.95 | 105.38 | 100.25 | 0.58 | 0.18
| | NOC | 74.60 | 74.96 | 73.84 | 74.48 | 73.57 | 0.36 | -0.12
| | NT | 30.18 | 30.60 | 29.94 | 30.50 | 29.32 | 0.42 | 0.32
| | NUAN | 14.25 | 14.46 | 14.08 | 14.40 | 12.72 | 0.21 | 0.15
| | PRU | 91.73 | 92.75 | 91.50 | 92.55 | 91.26 | 1.02 | 0.82
| | RHT | 24.29 | 25.00 | 24.02 | 24.23 | 24.47 | 0.71 | -0.06
| | RMBS | 21.90 | 22.17 | 21.83 | 22.00 | 21.49 | 0.27 | 0.10
| | SONS | 7.34 | 7.62 | 7.34 | 7.48 | 7.80 | 0.28 | 0.14
| | TGT | 62.10 | 62.60 | 61.90 | 62.44 | 59.88 | 0.50 | 0.34
| | TIF | 41.75 | 42.45 | 41.56 | 42.07 | 40.50 | 0.70 | 0.32
| | TROW | 48.97 | 49.78 | 48.87 | 49.60 | 48.94 | 0.81 | 0.63
| | UBS | 62.57 | 63.35 | 62.47 | 63.31 | 63.33 | 0.78 | 0.74
| | UIS | 9.25 | 9.28 | 9.15 | 9.21 | 9.22 | 0.03 | -0.04
| | URI | 28.48 | 28.80 | 28.35 | 28.74 | 28.25 | 0.32 | 0.26
| | VNO | 133.90 | 135.06 | 132.64 | 133.91 | 132.85 | 1.16 | 0.01
| | WLP | 80.69 | 81.29 | 80.27 | 80.98 | 79.00 | 0.60 | 0.29
| | WYN | 34.81 | 35.05 | 34.61 | 34.85 | 32.65 | 0.24 | 0.04
| | XEL | 24.25 | 24.53 | 24.20 | 24.30 | 24.14 | 0.28 | 0.05
| | XL | 73.00 | 73.44 | 72.75 | 73.10 | 71.56 | 0.44 | 0.10
| | YHOO | 29.69 | 30.86 | 29.64 | 30.66 | 29.88 | 1.17 | 0.97
| | ZMH | 84.09 | 84.96 | 83.92 | 84.62 | 85.00 | 0.87 | 0.53
| | 2664.80 | | | | | 39.91 | 23.41
|
[/Trading/Darvas/D200702]
permanent link
Monitoring Server: DNS with BIND
When doing diagnostics with network devices and their interfaces, it is helpful to have forward and
reverse lookups on a number of ip addresses. These lookups can be implemented within Active Directory or
under
a separate DNS server. Use the following instructions if you wish to use a separate dns server, based upon Bind.
You'll
need to choose a different domain or a delegated domain than what is used in Active Directory or your other primary
DNS server.
Installation
Install bind:
The service starts upon installation.
Choose a domain for the network devices. For example, if your regular network domain is
'example.com', use something like 'netdevices.example.com'. You'll need to make a number of changes to files
in
the /etc/bind directory.
Create a file called 'db.netdevices.example.com'. It's content should look
similar to:
;
; BIND data file for network devices
;
$TTL 604800
@ IN SOA netdevices.example.com root.localhost. (
2006051501 ; Serial
604800 ; Refresh
86400 ; Retry
2419200 ; Expire
604800 ) ; Negative Cache TTL ;
@ IN NS localhost.
@ IN A 127.0.0.1
device01 IN A 10.1.6.30 ;device 01 on network
Edit 'named.conf.local'. Uncomment the line which includes 'zones.rfc1918'. Add
a reference to the zone file you just created. You should have something that looks
like:
include "/etc/bind/zones.rfc1918";
zone "netdevices.example.com" {
type master;
file "/etc/bind/db.netdevices.example.com";
};
Update the
forwarders entry in 'named.conf.options'. This should be your Active Directory or similar servers. On
those servers, you should delegate the netdevices.example.com domain to this server.
options {
directory "/var/cache/bind";
forwarders {
10.1.1.154;
10.1.1.159;
};
auth-nxdomain no; # conform to RFC1035
};
Depending upon the ip blocks in which your devices reside, you'll need to create some
reverse lookup files. For example, create a file called 'db.6.1.10.in-addr.arpa' to hold the reverse lookups
for rfc1918 ip addresses.
; BIND reverse data file for local loopback interface
;
$TTL 604800
@ IN SOA localhost. root.localhost. (
2006060901 ; Serial
604800 ; Refresh
86400 ; Retry
2419200 ; Expire
604800 ) ; Negative Cache TTL
;
@ IN NS localhost.
30 IN PTR device01
Now edit zones.rfc1918 and add a zone line so it uses your new file.
For example, our change should show as:
zone "6.1.10.in-addr.arpa" { type master; file "/etc/bind/db.6.1.10.in-addr.arpa"; };
Restart the service. Check /var/log/syslog to be
sure things started properly with no errors.
/etc/init.d/bind9 restart
Edit /etc/resolv.conf so you have the following. If you are running dhcp, this may not work properly as
the file may get over-written.
search netdevices.example.com example.com
nameserver 10.1.1.154
nameserver 10.1.1.159
Active Directory Changes
You need to configure forward and reverse delegations in Active Directory DNS to allow the monitoring
server to resolve the monitoring subnet.
To provide forward delegation:
- Look in the Forward Lookup Zones and select the internal domain
- Right click and select New Delegation
- In 'Delegated Domain', put 'netdevices'
- Add the fully qualified domain name, 'server.netdevices.example.com', and it's ip address
- finish to apply the change
To provide reverse delegation (assuming that a complete subnet
has been assigned to the network monitoring server):
- Look in Reverse Lookup Zones
- Add a new Active Directory integrated zone
- Put in the first octet ONLY of the network id (for example 10)
- Finish
- Right click on the new reverse zone (such as 10.in-addr.arpa) and create a new Domain
- If the second octet of the domain is '1', use 1 as the domain id and Finish
- Right click on the new domain and add a new delegation
- If the third octet is 6, put 6 in as the delegated domain
- For the server name, put in the fully qualified domain name and ip address of the monitoring server running Bind
- Finish
To test, on the active directory server, start nslookup. Put in the fully
qualified domain name of the bind server to see if resolves. Put in the ip address of the bind server to see
if it resolves.
[/OpenSource/Debian/Monitoring]
permanent link
Aptitude vs apt-get vs dselect
I have tried to use dselect on occasion. I thought it was just me who couldn't figure out how to deal with it. I
guess that is a common ailment around users. I see now on an old debian-users mail list, dselect is really not
recommended for much of anything.
As such, I have been using the likes of apt-get, apt-key, and apt-file for my package management. Today, I see
that even apt-get is old and gray. The new kid on the block is 'aptitude' for Debian package management. From
a message by Joey Hess on a another Debian User List entry, I
reprint the following reasons for using Aptitude:
Seven reasons why you should be using aptitude instead of apt-get.
1. aptitude can look just like apt-get
If you run 'aptitude update' or 'aptitude upgrade' or 'aptitude
install', it looks and works just like apt-get, with a few enhancements.
So there is no learning curve.
2. aptitude sanely handles recommends
A long-standing failure of apt-get has been its lack of support for
the Recommends relationship. Which is a problem because many packages
in Debian rely on Recommends to pull in software that the average user
generally uses with the package. This is a not uncommon cause of
trouble, even though apt-get recently became able to at least mention
recommended packages, it's easy to miss its warnings.
Aptitude supports Recommends by default, and can be confgigured to
support Suggests too. It even supports installing recommended packages
when used in command-line mode.
3. aptitude tracks automatically installed packages
Stop worrying about pruning unused libraries and support packages from
your system. If you use aptitude to install everything, it will keep
track of what packages are pulled in by dependencies alone, and remove
those packages when they are no longer needed.
4. use aptitude as a normal user and avoid hosing your system
Maybe you didn't know that you can run aptitude in gui mode as a regular
user. Make any changes you'd like to try out. If you get into a real
mess, you can hit 'q' and exit, your changes will not be saved.
(aptitude also lets you use ctrl-u to undo changes). Since it's running
as a normal user, you cannot hose your system until you tell aptitude to
do something, at which point it will prompt you for your root password.
5. aptitude has a powerful UI and searching capabilities
Between aptitude's categorical browser and its great support for
mutt-style filtering and searching of packages by name, description,
maintainer, dependencies, etc, you should be able to find packages
faster than ever before using aptitude.
6. aptitude makes it easy to keep track of obsolete software
If Debian stops distributing a package, apt will leave it on your system
indefinitly, with no warnings, and no upgrades. Aptitude lists such
packages in its "Obsolete and Locally Created Packages" section, so you
can be informed of the problem and do something about it.
7. aptitude has an interface to the Debian task system
Aptitude lets you use Debian's task system as it was designed to be
used. You can browse the available tasks, select a task for install, and
then dig into it and de-select parts of the task that you don't want.
apt-get has no support for tasks, and aptitude is better even than
special purpose tools like tasksel.
Makes sense to me. I'll give it a try.
[/OpenSource/Debian]
permanent link
Tag Line, by Tom Robbins
Using words to describe magic is like using a screwdriver to cut roast beef.
-- Tom Robbins
[/Personal/TagLines]
permanent link
Hints for Debian apt-get and Expired Public Keys
When running 'apt-get update', I encountered time out issues and this error:
W: GPG error: http://security.debian.org testing/updates Release:
The following signatures couldn't be verified
because the public key is not available: NO_PUBKEY A70DAF536070D3A1
A search came up with a solution at
FreeSpamFilter.org Forum Site. The site recommended the following commands (where the key is the
one from the above error message):
gpg --keyserver subkeys.pgp.net --recv-keys A70DAF536070D3A1
gpg --export A70DAF536070D3A1 | apt-key add -
Before running 'apt-get update' again, based upon comments from
Ubuntu Forums,
I also ran the following two commands:
apt-get clean
apt-get check
The update process now runs cleanly.
[/OpenSource/Debian]
permanent link
|