/usr/share/doc/gnucap/examples/eqmodify.ckt is in gnucap 1:0.36~20091207-2build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 | Graphic equalizer -- all bands flat, modify test
R101a 35 1 50.K
R101b 36 1 50.K
R102a 32 4 50.K
R102b 33 4 50.K
R103a 35 7 50.K
R103b 36 7 50.K
R104a 32 10 50.K
R104b 33 10 50.K
R105a 35 13 50.K
R105b 36 13 50.K
R106a 32 16 50.K
R106b 33 16 50.K
R107a 35 19 50.K
R107b 36 19 50.K
R108a 32 22 50.K
R108b 33 22 50.K
R109a 35 25 50.K
R109b 36 25 50.K
R110a 32 28 50.K
R110b 33 28 50.K
C1 1 2 1.5u
C2 4 5 748.n
C3 7 8 408.n
C4 10 11 206.n
C5 13 14 100.n
C6 16 17 50.9n
C7 19 20 25.3n
C8 22 23 12.7n
C9 25 26 5.9n
C10 28 29 2.95n
C11 2 3 15.n
C12 5 6 6.8n
C13 8 9 3.3n
C14 11 12 1.8n
C15 14 15 1.n
C16 17 18 470.p
C17 20 21 220.p
C18 23 24 120.p
C19 26 27 68.p
C20 29 30 33.p
R1 3 0 475.K
R2 6 0 536.K
R3 9 0 549.K
R4 12 0 499.K
R5 15 0 464.K
R6 18 0 475.K
R7 21 0 523.K
R8 24 0 475.K
R9 27 0 412.K
R10 30 0 422.K
G5a 2 0 3 0 -.000416666
R11 2 0 2.4K
G5b 5 0 6 0 -.000416666
R12 5 0 2.4K
G6a 8 0 9 0 -.000454545
R13 8 0 2.2K
G6b 11 0 12 0 -.000454545
R14 11 0 2.2K
G7a 14 0 15 0 -.000454545
R15 14 0 2.2K
G7b 17 0 18 0 -.000454545
R16 17 0 2.2K
G8a 20 0 21 0 -.000454545
R17 20 0 2.2K
G8b 23 0 24 0 -.000454545
R18 23 0 2.2K
G9a 26 0 27 0 -.000416666
R19 26 0 2.4K
G9b 29 0 30 0 -.000416666
R20 29 0 2.4K
R29 31 32 9.1K
R30 33 34 9.1K
R31 34 35 9.1K
R32 36 37 9.1K
C25 31 32 150.p
C26 33 34 150.p
C27 34 35 150.p
C28 36 37 150.p
Vin 31 0 dc 1 ac 1
E2 34 0 32 33 10.K
E3 37 0 35 36 10.K
.print ac vdb(37) vdb(31) vdb(34)
.ac oct 4 31.25 32k
.modify R106a=100k
.modify R106b=1
.ac
.end
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