Computing desk | ||
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The page you are currently viewing is an archive page. While you can leave answers for any questions shown below, please ask new questions on one of the current reference desk pages. |
Hi, I tried repairing disk permissions using Disk Utility on my MacBook Pro (10.9.5) to sort an application permissions problem when I noticed some odd figures in the left hand col of Disk ute window. They sit under a partition line (which I didn't make); they look like this, and change every time I open this program (three times):
The first group had two variations of this: pfn llb.png The second included a variation and an uninstaller.
I don't know where these came from or why. They are unselectable. And of course I assumed they're sinister. I'm computer literate but not tech savvy by the way. What do they mean please? Thanks in advance Manytexts ( talk) 03:11, 6 March 2016 (UTC)
I have purchased video clips that I suspect were self-erasing (as I cannot locate them). My questions: 1) Can clips be easily programmed to self erase? 2) would that feature be disabled by conversation to a different format? 3) If not, is there another way to disable the self-erasing feature in such clips? Dmundt96 ( talk) 03:48, 6 March 2016 (UTC)
I bought an electronics project kit to practice my soldering: it came with a PCB and about 30 different components to solder to it. So far, 3 of the copper solder pads have lifted off after I'm done soldering the component to them. I have my iron turned up pretty high--the solder flows in 2-3 seconds after heating the joint--but I haven't left it in contact with the joint for anything more than that. From Googling, it sounds like fixing these pads will be more trouble than it's worth, so this project is a total loss. I just want to know whether the pads lifting off is likely a defect in the PCB, or if I'm doing something wrong. I'm using a Weller soldering stand with an adjustable temperature control, if that matters. Thanks! OldTimeNESter ( talk) 13:21, 6 March 2016 (UTC)
Always push the devices to be soldered down to the PCB to safe the single layer solder pad. When the device is required cooling and spaced from the PCB, make its pins to to force the pad. A TO-220 case supports screwmount and two different sizes per pin which can be used when no heat sink is used. With the solder iron, do not rubb the pads. if the PCB does not like the solder or is corroded, clean it first. The use of kitchen cleaner can remove grease. Its acid removes corroded cooper and protective films, You need to restore with plasic spray or cover it with solder, depending on the use of the curcuit You are assemling. Brake cleaner, which is explosive burnable, but a cheaper way to but in from the automotive part dealers as the degrease spray from the electronic distributor can remove grease form the PCB. Use outdoor only! Don't smoke and keep the soldering iron far from it. Don't breath it! Never apply it to rubber parts, electrolytic capacitors has installed on the bottom! Citric acid can remove coorded cooper, but the PCD needes to be washed after this application. --Hans Haase ( 有问题吗) 21:20, 6 March 2016 (UTC)
can deleting "update_package" on android be dangerous? — Preceding unsigned comment added by 188.29.165.20 ( talk) 14:04, 6 March 2016 (UTC)
May I ask how would you define the difference between these 3 "Categories" of software? I must say I don't find any major difference between them, do you recognize it ? 79.182.232.172 ( talk) 18:55, 6 March 2016 (UTC)
I recently asked about finding duplicated filenames in my photograph directory structure and got quite a nice Python program as an answer. My
Olympus E-620 camera names its filenames in the format pmddnnnn.jpg
where m is the month from 1 to c (in hexadecimal to fit in a single digit), dd is the day and nnnn is a running number from 1 to 9999.
I found out that by far the most of the duplicates were from the Helsinki Burlesque Festival in February-March and from the World Bodypainting Festival in July (along with quite a few from the recent World Gymnaestrada in middle July, but the next one won't come along until 2019). Duplicates from periods where I usually take only a few photographs were pretty much non-existent.
Because of the way the camera names the files, if I order the list of duplicated filenames alphabetically, wouldn't there pretty much always be consecutive stretches of duplicates where the stretch starts from the first photograph in the morning on one of the duplicated days, and ends with the last photograph in the evening on the other day? JIP | Talk 19:18, 6 March 2016 (UTC)
p3061680
as the last picture of March 6, the first picture of March 7 will be p3071681
. The technology in the camera (or indeed, the existence of the camera in the first place) does not factor into this. I'm just asking about filenames. Duplicated filenames don't overwrite each other either on the camera or on the computer as they go to different folders. I make a new folder every time the running number resets.
JIP |
Talk
06:04, 7 March 2016 (UTC)100/p3091682.jpg
and 101/p3091682.jpg
. Note: same filename, different files. The way I can have non-duplicate filenames is because the date and running number part rarely correlate. For example, in the above, 309
is the date (March 9) and 1682
is the running number. I might take a picture nowhere near 1682 on March 9 the next year, or take picture number 1682 nowhere near March 9 after the counter resets. By "continuous block" I mean a range of filenames that represent consecutive pictures that are duplicated across directories like in my example at the start of this reply. Such a block is going to span nowhere near 10000 pictures, let alone a year. At the best it spans a couple of days or a few hundred pictures.
JIP |
Talk
18:48, 9 March 2016 (UTC)Computing desk | ||
---|---|---|
< March 5 | << Feb | March | Apr >> | Current desk > |
Welcome to the Wikipedia Computing Reference Desk Archives |
---|
The page you are currently viewing is an archive page. While you can leave answers for any questions shown below, please ask new questions on one of the current reference desk pages. |
Hi, I tried repairing disk permissions using Disk Utility on my MacBook Pro (10.9.5) to sort an application permissions problem when I noticed some odd figures in the left hand col of Disk ute window. They sit under a partition line (which I didn't make); they look like this, and change every time I open this program (three times):
The first group had two variations of this: pfn llb.png The second included a variation and an uninstaller.
I don't know where these came from or why. They are unselectable. And of course I assumed they're sinister. I'm computer literate but not tech savvy by the way. What do they mean please? Thanks in advance Manytexts ( talk) 03:11, 6 March 2016 (UTC)
I have purchased video clips that I suspect were self-erasing (as I cannot locate them). My questions: 1) Can clips be easily programmed to self erase? 2) would that feature be disabled by conversation to a different format? 3) If not, is there another way to disable the self-erasing feature in such clips? Dmundt96 ( talk) 03:48, 6 March 2016 (UTC)
I bought an electronics project kit to practice my soldering: it came with a PCB and about 30 different components to solder to it. So far, 3 of the copper solder pads have lifted off after I'm done soldering the component to them. I have my iron turned up pretty high--the solder flows in 2-3 seconds after heating the joint--but I haven't left it in contact with the joint for anything more than that. From Googling, it sounds like fixing these pads will be more trouble than it's worth, so this project is a total loss. I just want to know whether the pads lifting off is likely a defect in the PCB, or if I'm doing something wrong. I'm using a Weller soldering stand with an adjustable temperature control, if that matters. Thanks! OldTimeNESter ( talk) 13:21, 6 March 2016 (UTC)
Always push the devices to be soldered down to the PCB to safe the single layer solder pad. When the device is required cooling and spaced from the PCB, make its pins to to force the pad. A TO-220 case supports screwmount and two different sizes per pin which can be used when no heat sink is used. With the solder iron, do not rubb the pads. if the PCB does not like the solder or is corroded, clean it first. The use of kitchen cleaner can remove grease. Its acid removes corroded cooper and protective films, You need to restore with plasic spray or cover it with solder, depending on the use of the curcuit You are assemling. Brake cleaner, which is explosive burnable, but a cheaper way to but in from the automotive part dealers as the degrease spray from the electronic distributor can remove grease form the PCB. Use outdoor only! Don't smoke and keep the soldering iron far from it. Don't breath it! Never apply it to rubber parts, electrolytic capacitors has installed on the bottom! Citric acid can remove coorded cooper, but the PCD needes to be washed after this application. --Hans Haase ( 有问题吗) 21:20, 6 March 2016 (UTC)
can deleting "update_package" on android be dangerous? — Preceding unsigned comment added by 188.29.165.20 ( talk) 14:04, 6 March 2016 (UTC)
May I ask how would you define the difference between these 3 "Categories" of software? I must say I don't find any major difference between them, do you recognize it ? 79.182.232.172 ( talk) 18:55, 6 March 2016 (UTC)
I recently asked about finding duplicated filenames in my photograph directory structure and got quite a nice Python program as an answer. My
Olympus E-620 camera names its filenames in the format pmddnnnn.jpg
where m is the month from 1 to c (in hexadecimal to fit in a single digit), dd is the day and nnnn is a running number from 1 to 9999.
I found out that by far the most of the duplicates were from the Helsinki Burlesque Festival in February-March and from the World Bodypainting Festival in July (along with quite a few from the recent World Gymnaestrada in middle July, but the next one won't come along until 2019). Duplicates from periods where I usually take only a few photographs were pretty much non-existent.
Because of the way the camera names the files, if I order the list of duplicated filenames alphabetically, wouldn't there pretty much always be consecutive stretches of duplicates where the stretch starts from the first photograph in the morning on one of the duplicated days, and ends with the last photograph in the evening on the other day? JIP | Talk 19:18, 6 March 2016 (UTC)
p3061680
as the last picture of March 6, the first picture of March 7 will be p3071681
. The technology in the camera (or indeed, the existence of the camera in the first place) does not factor into this. I'm just asking about filenames. Duplicated filenames don't overwrite each other either on the camera or on the computer as they go to different folders. I make a new folder every time the running number resets.
JIP |
Talk
06:04, 7 March 2016 (UTC)100/p3091682.jpg
and 101/p3091682.jpg
. Note: same filename, different files. The way I can have non-duplicate filenames is because the date and running number part rarely correlate. For example, in the above, 309
is the date (March 9) and 1682
is the running number. I might take a picture nowhere near 1682 on March 9 the next year, or take picture number 1682 nowhere near March 9 after the counter resets. By "continuous block" I mean a range of filenames that represent consecutive pictures that are duplicated across directories like in my example at the start of this reply. Such a block is going to span nowhere near 10000 pictures, let alone a year. At the best it spans a couple of days or a few hundred pictures.
JIP |
Talk
18:48, 9 March 2016 (UTC)