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| mwalsh | WHen I try to write a .iso file "to disk," only a write to image option is listed, not one of my drives. Can anyone help me with this? | 03:53 |
|---|---|---|
| nothlit | to disc you mean? | 04:02 |
| nothlit | are you trying to make an iso from a disc or burn an iso to a disc | 04:02 |
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| nothlit | making an iso is dd if=/dev/cdrom of=/home/user/file.iso | 04:06 |
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| === Mez -> bed | ||
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| jenda | Mez: muted till you turn off public away. | 12:35 |
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| Linuturk | mnoir: | 05:32 |
| mnoir | hi | 05:32 |
| Linuturk | nice and quiet | 05:32 |
| mnoir | better for extended conversation and i detect a need for a lesson | 05:32 |
| Linuturk | :) yes please | 05:32 |
| mnoir | 1. the utility less would be a good vchoice if you have not yet installed most | 05:33 |
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| mnoir | try ' less messages' | 05:33 |
| mnoir | tell me if you get a screenfull | 05:34 |
| Linuturk | I get a single line | 05:34 |
| mnoir | ?? | 05:34 |
| mnoir | paste line? | 05:34 |
| Linuturk | Jan 26 11:19:35 FAIA-CACTI syslogd 1.4.1#17ubuntu7: restart. | 05:34 |
| Linuturk | the restart of my machine, apparently | 05:34 |
| mnoir | that is it in the file messages? | 05:34 |
| Linuturk | yes | 05:34 |
| mnoir | ok - ls -l | grep messages please | 05:35 |
| Linuturk | ok | 05:35 |
| mnoir | you get several? | 05:35 |
| Linuturk | we have 5 messages files | 05:35 |
| mnoir | try less messages.0 | 05:35 |
| mnoir | log rotate automatically is filing them | 05:36 |
| mnoir | note the older ones are compressed | 05:36 |
| Linuturk | got a bunch | 05:36 |
| Linuturk | a bunch of information | 05:36 |
| mnoir | messages.0 is the most recent - ru lessing it? | 05:36 |
| Linuturk | yes, I am viewing it via less | 05:37 |
| mnoir | ok - some of the keystrokes available in less | 05:37 |
| mnoir | type a capital G | 05:37 |
| Linuturk | Jan 26 00:34:54 FAIA-CACTI -- MARK -- << that is the last entry before our restart | 05:37 |
| Linuturk | takes me to the end? | 05:37 |
| mnoir | yes | 05:38 |
| mnoir | slash followed by a string searches | 05:38 |
| mnoir | # followed by G goes to that line | 05:38 |
| Linuturk | searches down, correct? | 05:38 |
| mnoir | yes | 05:38 |
| mnoir | there is a go back but i forgot it - plus up and down arrows work | 05:38 |
| Linuturk | lowercase g takes me to the top | 05:39 |
| mnoir | 'most' is a better version | 05:39 |
| mnoir | cool - i didnt know that - probably g is search backwards | 05:39 |
| mnoir | no number means highest (or lowest :) ) | 05:39 |
| Linuturk | ok, I think I got this | 05:39 |
| mnoir | ok - you got a big gap | 05:40 |
| Linuturk | now, the messages log isn't helping | 05:40 |
| Linuturk | b/c of the gap | 05:40 |
| mnoir | often it does not | 05:40 |
| mnoir | you can look at system and daemon | 05:40 |
| mnoir | but i bet you find nothing | 05:40 |
| mnoir | feels like a mobo, ram ot diak problem | 05:40 |
| mnoir | ot diak= or disk | 05:41 |
| mnoir | done memtest yet? | 05:41 |
| Linuturk | before I installed | 05:41 |
| Linuturk | yes | 05:41 |
| mnoir | you might want to use tune2fs to set fsck to occur every boot | 05:41 |
| mnoir | how old is machine? | 05:42 |
| Linuturk | the actual hardware is fairly used and old | 05:42 |
| Linuturk | but the install is fairly new | 05:42 |
| mnoir | there can be weaknesses in drivers for very old systems plus hardware is suspect | 05:42 |
| mnoir | i figured that install was new | 05:43 |
| Linuturk | ok | 05:43 |
| Linuturk | I've looked in the syslog | 05:43 |
| mnoir | also, linux tends to drive hardware harder | 05:43 |
| mnoir | anything interesting? | 05:43 |
| Linuturk | the last activity is a snmp request to localhost | 05:43 |
| mnoir | around time of failure? | 05:43 |
| Linuturk | from the cacti install I have | 05:43 |
| Linuturk | yes | 05:43 |
| mnoir | hmm - snmp stuff is fairly low level | 05:44 |
| mnoir | it is possible hat sumpin in it was not very happy | 05:44 |
| mnoir | hat=that | 05:44 |
| Linuturk | well, I can't imagine what | 05:44 |
| mnoir | why? | 05:45 |
| Linuturk | there is plenty of drive space | 05:45 |
| Linuturk | the system has run fine for the last few weeks | 05:45 |
| mnoir | might not be due to running out of space... | 05:45 |
| Linuturk | what other logs did you say check? | 05:45 |
| mnoir | the reason i started with ls -latr is it shows you reverse update order | 05:46 |
| mnoir | this gives you a start on which logs are most active | 05:46 |
| mnoir | on a treasure hunt like this, you need educated guesses | 05:46 |
| mnoir | nothing is set in stone. | 05:47 |
| mnoir | since the issue is clearly very sporadic you will be meditating for a while before you find the pattern | 05:47 |
| mnoir | unless it get worse. | 05:47 |
| mnoir | or never happens again :) | 05:47 |
| Linuturk | so there isn't much I can do but wait for it to happen again/ | 05:48 |
| Linuturk | ? | 05:48 |
| mnoir | that is what i think | 05:48 |
| mnoir | except making the system do some extra checking like fsck every boot for a while | 05:48 |
| mnoir | and run some memtests using the special boot from grub | 05:49 |
| Linuturk | o, I have a question real quick | 05:49 |
| mnoir | k | 05:49 |
| Linuturk | how do I check free drive space via the cli? | 05:49 |
| mnoir | df -h is the most popular way | 05:49 |
| Linuturk | thank god | 05:49 |
| mnoir | ?? | 05:50 |
| Linuturk | I have been looking for that forever | 05:50 |
| mnoir | it is a simple question :) | 05:50 |
| mnoir | also remember thar man is your friend at the cli | 05:50 |
| mnoir | thar=that | 05:50 |
| Linuturk | yes, I agree | 05:50 |
| mnoir | type man df | 05:50 |
| mnoir | oh - you know about man | 05:50 |
| Linuturk | but if I type man drive space | 05:50 |
| mnoir | good | 05:50 |
| Linuturk | lol | 05:51 |
| Linuturk | ;p | 05:51 |
| Linuturk | I have to know the command before I can learn about it | 05:51 |
| mnoir | no - only works for commands, configs etc | 05:51 |
| mnoir | :) | 05:51 |
| mnoir | consider installing most | 05:51 |
| Linuturk | well, thanks, you've helped | 05:51 |
| mnoir | it is more like a text editor but assumes no editing | 05:51 |
| mnoir | or no changing | 05:52 |
| mnoir | k - back to the playpen :) | 05:52 |
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| warlock | gonna see if it workde | 09:36 |
| LjL | warlock: this time i've tried it, and it seemed to | 09:36 |
| warlock | ye works mate | 09:37 |
| warlock | thanks, you saved me 4hours | 09:37 |
| warlock | BIG thanks. | 09:37 |
| LjL | you're quite welcome :) want to know the specifics of that command's parts? | 09:37 |
| warlock | else i'd have to edit all files manually | 09:37 |
| warlock | sure | 09:37 |
| warlock | would help :) | 09:38 |
| LjL | warlock: well, the first part if a for loop. for VariableName in ShellPattern ; do ................. ; done repeats the "..." for every file matched by ShellPattern (*.conf in this case) | 09:38 |
| LjL | warlock: of course, every time it sets VariableName to the name of the relevant file (i've called that variable File) | 09:39 |
| warlock | oi | 09:39 |
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| warlock | I always tend to learn something new :p | 09:39 |
| LjL | warlock: "sed" is used in this case to change text into other text. the "-i" option means it changes a file "in place" (i.e. it just changes the files, not output the changes to the console) | 09:39 |
| LjL | warlock: the "s/blah/blah/" syntax contains regular expressions... in general, s/blah1/blah2/ changes "blah1" into "blah2" | 09:40 |
| LjL | warlock: in that command specifically, mytest= is just mached, then the .* means "match anything" ("." is "any character", and "*" is "any number of times") | 09:41 |
| LjL | warlock: then the $ means "end of line" (probably reduntant) | 09:41 |
| warlock | ooh | 09:41 |
| LjL | warlock: the round brackets ( ) mean "remember this part" (they needed to be escaped with \, so \( and \), but this is not really important) | 09:41 |
| LjL | warlock: and in fact, the .* part is remembered, and recalled by "\1" later - \1 means "recall the first thing you remembered" | 09:42 |
| LjL | warlock: so, if you had mytest=abcdefg, it will repeat mytest= and the abcdefg again | 09:42 |
| warlock | oic | 09:42 |
| LjL | warlock: then the ",something2" is simply added | 09:42 |
| warlock | perfect :) | 09:43 |
| LjL | so, s/ mytest= ( .* ) / mytest= \1 ,something2 / | 09:43 |
| LjL | the final "g" simply means "repeat this for every instance", so if there's more than one "mytest=", it'll work for all of them | 09:43 |
| LjL | then "$File" of course is that File variable we defined in the "for" command | 09:43 |
| LjL | (when using variables - as opposed to declaring them - you need to prefix a $) | 09:44 |
| warlock | :o | 09:45 |
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