Commands by billyauhk (1)

  • Tell what is encoded in a float, given its HEX bytes

    It handles all possible combination of the hex bytes, including NaNs, Infinities, Normalized and Subnormal Numbers... This crazy DC stuff spent me a few days to write, optimize, polish and squeeze so that it works within the tight 255 character bound... You can modify it easily for other IEEE754 numbers, say, half, double, double-extended, quadruple (I hope someone will find this useful and submit more dc code to commandlinefu!) Show Sample Output


    1
    dc -e"16i?dsH0sq2d17^ss8^dse2/1-stdlsle*/2*2B+an[[ FP Indef.]n]sQ[dls2//2%_2*53+an[NaN]ndle4*1-ls2/*=Q2Q]sN[1sqdls%0<N[oo]n]sMdls/le%dsdle1-=M[[]pq]sPlq1=P[r+0]s0ldd1r0=0lHls%rls*+sS2r^Alt4*^*lS*2lt^/ls/dsSZlt4*-1-sFlsZ1+klSdArZ1-^/dn0=P[e]nlFp"
    billyauhk · 2011-07-27 18:55:20 4

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Convert seconds to [DD:][HH:]MM:SS
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a find and replace within text-based files
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quick and dirty formatting for HTML code
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Get AWS temporary credentials ready to export based on a MFA virtual appliance
You might want to secure your AWS operations requiring to use a MFA token. But then to use API or tools, you need to pass credentials generated with a MFA token. This commands asks you for the MFA code and retrieves these credentials using AWS Cli. To print the exports, you can use: `awk '{ print "export AWS_ACCESS_KEY_ID=\"" $1 "\"\n" "export AWS_SECRET_ACCESS_KEY=\"" $2 "\"\n" "export AWS_SESSION_TOKEN=\"" $3 "\"" }'` You must adapt the command line to include: * $MFA_IDis ARN of the virtual MFA or serial number of the physical one * TTL for the credentials

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