How do you write a shell script that change the extension of all the files?
e.g
chext rtf doc
where .rtf is the original extension
and .doc is the new extension
is it something to do with basename?
do I need a for loop?
Please help!
Unix SuperNewbie (4 Replies)
Hi -
I'm stuck. I have a group of text files created using the split command. My files have the names "projectaa", "projectab", "projectac", etc. What I want to do is add the extension ".txt" to each file. I think I've got part of a sed command together, but I'm stuck on my regex - I keep getting... (9 Replies)
Hi
I am writing a script which does an FTP of a set of files onto another machine and then would have to rename the files into a different extension on the source machine.
for example if the file being sent via FTP is sample.txt. Once the file has been transferred i would want to modify the... (2 Replies)
Hi,
I want to write a script to read all the filenames with extension .xml in a directory and pass the name of the file, one by one, to another function.
Please help me out.
Regards.
Saurabh (3 Replies)
Hi there,
I'm pretty new to UNIX and have tried trawling through this forum to find an answer to what I want to try to do, which I'm sure is very simple but I don't know how to do it.
What I have a a folder that contains multiple files that I have copied from Windows and I want to remove the... (5 Replies)
I have a directory of files and each file has a random 5 digit string at the beginning that needs to be removed. Plus, there are some files that will be identically named after the 5 digit string is removed and I want those eliminated or moved.
any ideas? (17 Replies)
Hi I have abc_ahb_one.v
abc_ahb_two.v
abc_ahb_three.v
........l
like this
-----upto
abc_ahb_ninety.v in some directory.
I need to change those file names to like below.
... (5 Replies)
Hi, all:
I'd love to use shell script to change all filenames under different folders once for all:
I've got over 100 folders, in each of them, there is a file named "a.ppm". I wanna change all these "a.ppm" to "b.ppm", and still . Visually, the directory structure looks like:
and hope... (1 Reply)
hi,
i have a directory which contains some files and a subdirectory. i am writing only the files names to a file using the below code.
ls -ltr | grep "^-" | awk '{print $NF}' > /home/file_list$$
cat /home/file_list$$
s1_abc.txt
s2_def.xls
s3_def.xls
as you can see there is one .txt... (7 Replies)
Hello,
I made a mistake in a script and now need to go back and change allot of filenames. I need to change "v4" in filenames to "v3". I was thinking of something like this.
#!/bin/bash
FILELIST=$(ls -f -R *)
for FILE in $FILELIST
do
# create new filename
... (5 Replies)
Discussion started by: LMHmedchem
5 Replies
LEARN ABOUT DEBIAN
slamc3
slamch.f(3) LAPACK slamch.f(3)NAME
slamch.f -
SYNOPSIS
Functions/Subroutines
REAL function slamch (CMACH)
SLAMCH
REAL function slamc3 (A, B)
SLAMC3
Function/Subroutine Documentation
REAL function slamc3 (realA, realB)
SLAMC3 Purpose:
SLAMC3 is intended to force A and B to be stored prior to doing
the addition of A and B , for use in situations where optimizers
might hold one of these in a register.
Author:
LAPACK is a software package provided by Univ. of Tennessee, Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..
Date:
November 2011
Parameters:
A
B
The values A and B.
Definition at line 171 of file slamch.f.
REAL function slamch (characterCMACH)
SLAMCH Purpose:
SLAMCH determines single precision machine parameters.
Parameters:
CMACH
Specifies the value to be returned by SLAMCH:
= 'E' or 'e', SLAMCH := eps
= 'S' or 's , SLAMCH := sfmin
= 'B' or 'b', SLAMCH := base
= 'P' or 'p', SLAMCH := eps*base
= 'N' or 'n', SLAMCH := t
= 'R' or 'r', SLAMCH := rnd
= 'M' or 'm', SLAMCH := emin
= 'U' or 'u', SLAMCH := rmin
= 'L' or 'l', SLAMCH := emax
= 'O' or 'o', SLAMCH := rmax
where
eps = relative machine precision
sfmin = safe minimum, such that 1/sfmin does not overflow
base = base of the machine
prec = eps*base
t = number of (base) digits in the mantissa
rnd = 1.0 when rounding occurs in addition, 0.0 otherwise
emin = minimum exponent before (gradual) underflow
rmin = underflow threshold - base**(emin-1)
emax = largest exponent before overflow
rmax = overflow threshold - (base**emax)*(1-eps)
Author:
Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Date:
November 2011
Definition at line 68 of file slamch.f.
Author
Generated automatically by Doxygen for LAPACK from the source code.
Version 3.4.1 Sun May 26 2013 slamch.f(3)