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Full Discussion: Need to delete multiple lines in a file.
Top Forums Shell Programming and Scripting Need to delete multiple lines in a file. Post 302092942 by petebear on Saturday 14th of October 2006 05:55:39 PM
Old 10-14-2006
Quote:
Originally Posted by vgersh99
nawk -v name='1testone' -f kang.awk myFile.txt

kang.awk:
Code:
/^[^ ]/ { found= ($1 == name) ? 1 : 0 }
!found

Could someone explain this? I understand that "/^[^ ]/ " grabs all the usernames. and I think I understand the ternary operator; found equals true (1) if name (the username) is found in $1, or found equals false (0) if it's not. Then I get a bit lost, I think !found toggles the value of found, but why? And how does it all end up removing the username and all text between it and the next username. Thanks, pete.
 

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LEARN ABOUT OSX

glusphere

GLUSPHERE(3G)															     GLUSPHERE(3G)

NAME

       gluSphere - draw a sphere

C SPECIFICATION

       void gluSphere( GLUquadric* quad,
		       GLdouble radius,
		       GLint slices,
		       GLint stacks )

PARAMETERS

       quad    Specifies the quadrics object (created with gluNewQuadric).

       radius  Specifies the radius of the sphere.

       slices  Specifies the number of subdivisions around the z axis (similar to lines of longitude).

       stacks  Specifies the number of subdivisions along the z axis (similar to lines of latitude).

DESCRIPTION

       gluSphere  draws  a sphere of the given radius centered around the origin. The sphere is subdivided around the z axis into slices and along
       the z axis into stacks (similar to lines of longitude and latitude).

       If the orientation is set to GLU_OUTSIDE (with gluQuadricOrientation), then any normals generated point away from the center of the sphere.
       Otherwise, they point toward the center of the sphere.

       If  texturing  is turned on (with gluQuadricTexture), then texture coordinates are generated so that t ranges from 0.0 at z =-radius to 1.0
       at z = radius (t increases linearly along longitudinal lines), and s ranges from 0.0 at the +y axis, to 0.25 at the +x axis, to 0.5 at  the
       -y axis, to 0.75 at the -x axis, and back to 1.0 at the +y axis.

SEE ALSO

       gluCylinder, gluDisk, gluNewQuadric, gluPartialDisk, gluQuadricOrientation, gluQuadricTexture

																     GLUSPHERE(3G)
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