10-05-2006
Inserting argument into top of a file
Hi,
I am new to Unix, and I am trying to append a line of argument into a current file. I need this line to be inserted into the very top of the file. Does anyone know how this is done?
For example, I am trying: echo "insert to top" >> filename. This inserts the line at the bottom of the file. How do I get it to insert to the top??
Please help!
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
when directing some text into a file can you choose where it goes like the top of the file (which is text aswell) or the middle??
if so how - especially would like to know how to do so in vi (text editor)
If i were to enter an argument ($1) into a another argument ($2)
would it would be... (6 Replies)
Discussion started by: rprules
6 Replies
2. Shell Programming and Scripting
Can someone please help me with this SHELL script?
I need to create a script that gets a positive number n as an argument. The script must calculate the factorial of its argument. In other words, it must calculate n!=1x2x3x...xn. Note that 0!=1.
Here is a start but I have no clue how to... (3 Replies)
Discussion started by: I-1
3 Replies
3. Programming
Could anyone help me with an efficient(and easy) way to insert data in a file directly(with out using temp file).
example
open the file1.txt
11112222
333333
44444444
and insert something say " 99999 " somewhere inside the file
as
11112222
333 99999 333
44444444 (2 Replies)
Discussion started by: johnbach
2 Replies
4. Shell Programming and Scripting
i had the following type of data file vchrdump:
Vouchers For Date :05/01/2009 * ... (4 Replies)
Discussion started by: KANNI786
4 Replies
5. Shell Programming and Scripting
Hi,
I have this line:
ip=111.222.133.144,mac=00:16:3E:2A:08:3C,vifname=veth360','ip=10.2.3.4,vifname=veth360a'
^
|
-------
I want to insert this IP 144.133.222.111 between "144"... (4 Replies)
Discussion started by: iga3725
4 Replies
6. Shell Programming and Scripting
If ($argv == “-debug”) then
Echo “in loop”
Endif
But this is not working. If I modify this code and remove “-“, then it works.
Similarly I am getting problem using grep command also
Grep “-debug” Filename
Can someone please help me on how to resolve these... (1 Reply)
Discussion started by: sarbjit
1 Replies
7. Shell Programming and Scripting
Hello,
Is there any method thorugh which script can take argument if pass otherwise if argument doesn't pass then it takes the argument from the configuration file
i.e I am workiing on a script which will run through crontab and the script will
chekout the code ,zip and copy to the... (3 Replies)
Discussion started by: rohit22hamirpur
3 Replies
8. HP-UX
Hello Mates,
I have one txt file having commo seperated values. I have to insert string "FALSE" in 2nd field from the end. E.G
SE18 6RN,,,,5439070,1786840,,1000002148671600,123434
Out put should be:
SE18 6RN,,,,5439070,1786840,FALSE,1000002148671600,123434
Can some one help me... (0 Replies)
Discussion started by: krsnadasa
0 Replies
9. Shell Programming and Scripting
Hi Forum members,
I want to insert the filename at the top of file (i.e, first row only)
My file name is like asdf_432
And I want to insert this filename in first row as filename is asdf with serial no. 432
Thanks in advance. :) (4 Replies)
Discussion started by: CAch
4 Replies
10. Shell Programming and Scripting
Hi,
I have one file with one column and several hundred entries
File1:
NA1
NA2
NA3And now I need to run a command within a mapping aligner tool to insert these sample names into a sequence alignment file (SAM) such that they look like this
@RG ID:Library1 SM:NA1 PL:Illumina ... (7 Replies)
Discussion started by: nans
7 Replies
LEARN ABOUT OSX
glfrustum
GLFRUSTUM(3G) GLFRUSTUM(3G)
NAME
glFrustum - multiply the current matrix by a perspective matrix
C SPECIFICATION
void glFrustum( GLdouble left,
GLdouble right,
GLdouble bottom,
GLdouble top,
GLdouble zNear,
GLdouble zFar )
PARAMETERS
left, right Specify the coordinates for the left and right vertical clipping planes.
bottom, top Specify the coordinates for the bottom and top horizontal clipping planes.
zNear, zFar Specify the distances to the near and far depth clipping planes. Both distances must be positive.
DESCRIPTION
glFrustum describes a perspective matrix that produces a perspective projection. The current matrix (see glMatrixMode) is multiplied by
this matrix and the result replaces the current matrix, as if glMultMatrix were called with the following matrix as its argument:
2 zNear
------------ 0 A 0
right - left
2 zNear
0 ------------ B 0
top - bottom
0 0 C D
0 0 -1 0
A = (right + left) / (right - left)
B = (top + bottom) / (top - bottom)
C = - (zFar + zNear) / (zFar - zNear)
D = - (2 zFar zNear) / (zFar - zNear)
Typically, the matrix mode is GL_PROJECTION, and (left, bottom, -zNear) and (right, top, -zNear) specify the points on the near clipping
plane that are mapped to the lower left and upper right corners of the window, assuming that the eye is located at (0, 0, 0). -zFar speci-
fies the location of the far clipping plane. Both zNear and zFar must be positive.
Use glPushMatrix and glPopMatrix to save and restore the current matrix stack.
NOTES
Depth buffer precision is affected by the values specified for zNear and zFar. The greater the ratio of zFar to zNear is, the less effec-
tive the depth buffer will be at distinguishing between surfaces that are near each other. If
r = zFar / zNear
roughly log2(r) bits of depth buffer precision are lost. Because r approaches infinity as zNear approaches 0, zNear must never be set to
0.
ERRORS
GL_INVALID_VALUE is generated if zNear or zFar is not positive, or if left = right, or bottom = top.
GL_INVALID_OPERATION is generated if glFrustum is executed between the execution of glBegin and the corresponding execution of glEnd.
ASSOCIATED GETS
glGet with argument GL_MATRIX_MODE
glGet with argument GL_MODELVIEW_MATRIX
glGet with argument GL_PROJECTION_MATRIX
glGet with argument GL_TEXTURE_MATRIX
glGet with argument GL_COLOR_MATRIX
SEE ALSO
glOrtho, glMatrixMode, glMultMatrix, glPushMatrix, glViewport
GLFRUSTUM(3G)