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UNIX for Dummies Questions & Answers
Subtracting number of days from current date
Post 302863443 by sathyaonnuix on Monday 14th of October 2013 08:48:49 AM
10-14-2013
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1. Shell Programming and Scripting
Hi i am trying to subtract days from current date. For example todays date is 10/03/2006. If i subtract 2 days it should give 8/03/2006. I am also trying to find the access date of a file in dd/mm/yyyy format. Can any one please help in how to do this.
Ramesh (1 Reply)
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how can we add or subtract days from the output of date command in unix...
like if i want to subtract a day from the result of date command like this..
v_date=`date +%Y%m%d`
this wud give me 20080519
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hii all.
I have to get the date of the 7th day past from the current date.
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cal | awk '{print $2}' will this type of command work.
actually my need is
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Anybody knows how to get what date was 28 days ago of the current system date through UNIX script.
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Hello Experts,
How do i get date after 5 days from current date in YYYYMMDD format?
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I am trying to find out the number of days between the current date and user defined date.
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I have to display only those subscribers which are in "unconnected state" and the date is 90 days older than today's date.
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LEARN ABOUT DEBIAN
clacon
clacon.f(3) LAPACK clacon.f(3) NAME
clacon.f - SYNOPSIS
Functions/Subroutines subroutine clacon (N, V, X, EST, KASE) CLACON Function/Subroutine Documentation subroutine clacon (integerN, complex, dimension( n )V, complex, dimension( n )X, realEST, integerKASE) CLACON Purpose: CLACON estimates the 1-norm of a square, complex matrix A. Reverse communication is used for evaluating matrix-vector products. Parameters: N N is INTEGER The order of the matrix. N >= 1. V V is COMPLEX array, dimension (N) On the final return, V = A*W, where EST = norm(V)/norm(W) (W is not returned). X X is COMPLEX array, dimension (N) On an intermediate return, X should be overwritten by A * X, if KASE=1, A**H * X, if KASE=2, where A**H is the conjugate transpose of A, and CLACON must be re-called with all the other parameters unchanged. EST EST is REAL On entry with KASE = 1 or 2 and JUMP = 3, EST should be unchanged from the previous call to CLACON. On exit, EST is an estimate (a lower bound) for norm(A). KASE KASE is INTEGER On the initial call to CLACON, KASE should be 0. On an intermediate return, KASE will be 1 or 2, indicating whether X should be overwritten by A * X or A**H * X. On the final return from CLACON, KASE will again be 0. Author: Univ. of Tennessee Univ. of California Berkeley Univ. of Colorado Denver NAG Ltd. Date: November 2011 Further Details: Originally named CONEST, dated March 16, 1988. Last modified: April, 1999 Contributors: Nick Higham, University of Manchester References: N.J. Higham, 'FORTRAN codes for estimating the one-norm of a real or complex matrix, with applications to condition estimation', ACM Trans. Math. Soft., vol. 14, no. 4, pp. 381-396, December 1988. Definition at line 115 of file clacon.f. Author Generated automatically by Doxygen for LAPACK from the source code. Version 3.4.1 Sun May 26 2013 clacon.f(3)