Tag-Archive for » bash «

Torsdag, 12. november, 2009 | Forfatter:

Hvis du noen gang finner deg selv å oppdatere et enkelt program i Arch Linux (en veldig dårlig idé, btw) og det oppgraderer leselinjen du kan ende opp med å se en feil på linje med:
/bin/bash: error while loading shared libraries: libreadline.so.5: cannot open shared object file: No such file or directory
Forhåpentligvis har du fortsatt en bash-ledetekst åpen, og du har ikke lukket dem alle. Hvis du fortsatt kan, med en gang kjør følgende:
pacman -S bash
ellers vil du ikke kunne løpe bash lenger fordi bash fortsatt vil koble til den gamle versjonen av leselinjen.

Også, i fremtiden, ikke løp
pacman -Sy application
(python i mitt tilfelle)
i stedet, løpe:
pacman -Syu
som vil sikre at alle applikasjoner blir oppgradert.

personlig, Jeg tror at bash burde ha hatt et avhengighetssett og sa at det krevde den gamle spesifikke versjonen av readline og det samme for den nye bash, requiring the new version of readline. Regardless, rather play it safe. 😉

Dele
Friday, June 05th, 2009 | Forfatter:

Well it turns out that the problem is a little more subtle than that. It is only the rot user that does not have syntax highlighting.

You see, vim does have syntax highlighting but vi and vim are different binaries. A shell startup script only aliases vi to vim if the user id is higher than 100 – which excludes root. The simplest workaround is to just add an explicit alias to root’s .bashrc at /root/.bashrc :

alias vi='vim'

run the command manually or just log in again toactivatethe alias.

Btw, I’m starting to like via lot. For a long time it made no sense to mebut now I am found. 🙂

Dele
Saturday, March 28th, 2009 | Forfatter:

Its amazing how much you can do by combining the small yet powerful commands Unix has available.

This little-used command, time, finally became useful today as a way to report the length of time that certain automated operations are running. In my example, I’m timing how long it takes to build the Linux kernel:

$ time rebuild-kernel26
...
couple-thousand-lines-of-scrolling-text
...
==> Finished making: kernel26 2.6.28.8-1 x86_64 (Sat Mar 28 17:19:52 SAST 2009)
real    62m21.994s
user    43m31.846s
sys     6m1.096s

Yup, that took a little over an hour to build. The values are:

  • realthe actual time elapsed while the command was running – 62 minutes
  • userthe amount of userland time the command used – 43 minutes
  • systhe amount of system time the command used – 6 minutes

(I was busy doing other things while this was happening which is why it took 62 minutes for the desktop to do (43+6=) 49 minutes-worth of work)

If you’re using the GNU version (most likely), it also gives you the option of displaying the results in a custom fashion. Mostly, this command could be useful in scripts where you need to report how long a task tookor maybe? just a geeky way to time something random. 😛

Dele
Kategori: linux  | Tags: , , , , , , ,  | Leave a Comment
onsdag, March 18th, 2009 | Forfatter:

[redigere] So much for that. It turns out that openssl is able to determine that the key and certificate are already in a single file. Derfor, Nei csplitting required (vel, I hope somebody reading this at least learned about how nice csplit is). In fact, the whole script might as well be obsoleteblaargh. Well, at least it gives a nice warning about not giving a blank passphrase. 😀

Here’s the new version:

pem2pfxconverts a .pem-formatted file containing a private key and signed certificate into a Windows-compatible .pfx certificate file.

#!/bin/bash
#pem2pfx
#v0.2
#Tricky - brendan@swiftspirit.co.za
# Converts a .pem certificate file to .pfx format
# $1 is the source file
set -e
 
if [ $# = 1 ]; deretter
  outputfile=`echo $1 | og 's/.pem$/.pfx/'`
 
  echo "Please specify a password below. Windows nekter å importere et .pfx-sertifikat med et tomt passord."
  openssl pkcs12 -eksport -ute $outputfile -i $1
 
 ellers
  echo "pem2pfx - konverterer en .pem-formatert privatnøkkel og sertifikatfil til en IIS-kompatibel .pfx-fil."
  echo "Usage: pem2pfx inputfile.pem"
være

mer…

Dele
Saturday, February 21st, 2009 | Forfatter:

and my Personal Rating (PR) out of 10 😉

I use Firefox so most of these won’t apply to non-FF users. Men, I’d be very very interested to hear what other addons my friends, subscribers, and random websurfers find interesting or useful to them. Have your say and let us know why you love the addons you love. 🙂

personlig, I prefer addons that aren’t intrusive. Ideally, an addon must have a minimal interface and give me a measurable benefit for me to keep it installed.

Cacheviewer – 7

This is a GUI front-end for the Cache Firefox keeps of the last few pages and media. I’ve found this addon more interesting than useful right now so I’m probably going to remove it soon.

ColorfulTabs – 9

I love the colours. The tab colour-grouping doesn’t work very well when you reach about 30 tabs though… :-/

Download Statusbar – 10

I prefer having everything in Firefox in a single window in tabs. Having a download box in a separate window is a big no-no for me. It also saves screen real-estate since it is very minimal. 🙂

video DownloadHelper – 10

Video DownloadHelper ser for streaming media – spesielt på jakt etter noe stort innhold som blir lastet ned. Når du klikker på ikonet, det viser deg de for tiden nedlasting av bekker og gir deg muligheten til å stå i kø den som en “normal” nedlasting.

Siden du vet aldri om FF kommer til å krasje eller strømmen kommer til å kutte, Jeg foretrekker å lagre en kopi til skrivebordet mitt, og jeg kan da se videoen uten å bruke mer båndbredde for å laste ned videoen på nytt. Også, på jobb, når folk sender meg linker til youtube eller andre medier, Jeg pleier ikke bry ser til mye etter – på min egen fritid eller i en pause.

utløps~~POS=TRUNC Canary – 9

Denne pene og minimal addon forteller deg om SSL-sertifikat for nettstedet du viser for øyeblikket er snart kommer til å utløpe. Hvis ditt eget nettsted har en SSL-sertifikat, Jeg anbefaler at du bruker denne addon for å unngå nettstedets SSL-sertifikat utløper på grunn av en enkel mangel på varsling eller misforståelser.

Fasterfox – 8

Fasterfox adds some network optmisation options. Some of the options could make your corporate network admin a little mad with you though. 😉

Firebug – 9

For web utvikling og eksperimentering med sider. Awesome for testing av små biter av kode samt debugging sider.

FoxClocks – 6

errtells you the time in other time zones. o.O Was useful for a short timenow its redundant since my head is working it out faster than I can glance. rm -f

FoxyProxy – 9

Awesome for surfing bestemte sider gjennom konkrete proxy-servere. This is useful for when some sites are blocked or the SAIX Transparent Proxy servers aren’t working properly. 🙂

Jeg bruker dette til å rute noen trafikk over proxy-servere som jeg vil heller ikke gå gjennom standardruter. Its also very flexible. Hvis du har mer enn en proxy-server er tilgjengelig og den du vanligvis bruker plutselig går på blink, bare bytte over til den neste. 🙂

Greasemonkey – 10

Right now, I use this only for the GooglemonkeyR manus. This script reformats Google‘s search results to your specifications and also has an option to show small thumbnail of the pages Google links to. Greasemonkey can do a lot more and there are plenty of scripts readily available for many many sites.

Live HTTP headers – 8

I’ve used this a few times to diagnose gzip compression issues with IIS web servers. Not much else to say though: It works.

Live PageRank – 10 (so faronly installed it yesterday)

This addon seems simple enough. It gets the PageRank from Google and shows it in the tray.

NoScript – 10

NoScript er AWESOME til å blokkere reklame. Det er litt irriterende i starten siden du må godkjenne alle nettsteder du liker – but in the long run it is soooo worth it. 🙂

gjenopplive Sider – 10

Veldig nyttig for hvis du blar til et område, og det skjer for å være nede. Hvis området er statisk innhold orientert da dette gjør det enkelt å raskt finne innhold hvis bufret online.

Tab Mix Plus – 8

Awesome for if you have more than 7-or-so tabs.

ShowIP (using a version modified for work purposesdisplays company server’s canonical name when browsing) – 10

I cannot imagine the hell I’d have to go through to identify a server without this plugin. Okay, I can. Used to have to do this all the time. I eventually scripted it but I can’t find the original script. Here’s my 60-second attempt at recreating what was in that script:

$ cat /etc/hosts | grep `dig A $hostname @mycachingnameserver | grep . | grep -v "^;"`
$ dig -x `dig A $hostname @mycachingnameserver | grep ^$hostname | grep A | \
  awk '/[.]/{print $5}'` @mycachingnameserver | grep . | grep -v "^;"

Web Developer – 9

I used this once to diagnose some issues with a page. I don’t do much web development so I’m going to remove this one. Its no comment on its capabilities since I believe this is a top notch add-on if you’re doing a lot of web development work.

Dele