Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Using variables to copy files with increasing numerical names.
Top Forums UNIX for Beginners Questions & Answers Using variables to copy files with increasing numerical names. Post 303044900 by Jovec on Sunday 8th of March 2020 10:04:10 AM
Old 03-08-2020
Using variables to copy files with increasing numerical names.
Hello, I have been learning Linux shell commands for about 4 months now. I am trying to write a simple shell script, but I have encountered an issue I do not understand the cause of.

Code:
#!/bin/bash

first=1
last=10

cp path/to/files/{$first..$last}.dat ./

When I run my script I get an error.
[user@x dir]$ ./myscript.sh
cp: cannot stat `path/to/file/{1..2}.dat': No such file or directory
[user@x dir]$

However when I run it without variables.
Code:
#!/bin/bash

cp path/to/files/{1..10}.dat ./

Running script without variables.
[user@x dir]$ ./myscript.sh

It copies the ten *.dat files from the path/to/files to the directory of myscript.sh. How can I get the script working with variables? Thanks in advance for any help given.
 

10 More Discussions You Might Find Interesting

1. UNIX for Advanced & Expert Users

copy files with invalid names

Hi all, I have to copy a directory to another location. While doing so with the cp command I got some errors due to invalid filenames of some files. For example, some files have a colon in their names, which is throwing error. These files are not copied to the destination. How to copy... (1 Reply)
Discussion started by: fermisoft
1 Replies

2. Programming

Adding files of numerical data

Hi I was hoping that maybe someone could help me with a small piece of C code. I have a number of files, which are all of similar layout ie. three lines of text and 5-6 columns of numerical data. I need to add each of the elements of the second column in one file to their counterparts in the second... (17 Replies)
Discussion started by: Boucho
17 Replies

3. Shell Programming and Scripting

compare files by numerical value

Hi everyone, I would love to have a script that does the following: I have one file that looks like that: ATOM 1 BB SER 1 1 -31.958 -25.125 -11.061 1.00 0.00 ATOM 3 BB GLY 1 2 -32.079 -26.085 -14.466 1.00 0.00 ATOM 4 BB VAL 1 3 ... (1 Reply)
Discussion started by: s-layer
1 Replies

4. Shell Programming and Scripting

how can i copy a list of files with different names into others directory have the same name

dear all. how can i copy a list of files with different names into others directory have the same name like i have 3 files 10_10 10_10_11 10_10_11_12 and i have 3 directories 10_10 10_10_11 10_10_11_12 how can i make a loop to cp this files into the directory have the same name like... (0 Replies)
Discussion started by: t17
0 Replies

5. UNIX for Dummies Questions & Answers

How can i copy a list of files with different names into others directory have the same name?

dear all. how can i copy a list of files with different names into others directory have the same name like i have 3 files 10_10 10_10_11 10_10_11_12 and i have 3 directories 10_10 10_10_11 10_10_11_12 how can i make a loop to cp this files into the directory have the same name like... (31 Replies)
Discussion started by: t17
31 Replies

6. Shell Programming and Scripting

how to copy files followed by list of names of all the files in /etc?

....... (2 Replies)
Discussion started by: pcbuilder
2 Replies

7. Shell Programming and Scripting

Finding File Names Ending In 3 Random Numerical Characters

Hi, I have a series of files (upwards of 500) the filename format is as follows CC10-1234P1999.WGS84.p190 each of this files is in a directory named for the file but excluding the extension. Now the last three numeric characters, in this case 999, can be anything from 001 to 999, I need to... (3 Replies)
Discussion started by: roche.j.mike
3 Replies

8. UNIX for Dummies Questions & Answers

List files according to the numerical value

Hi, I have a large number of files which are named as follows. VF_50, VF_100, VF_150, VF_250, VF_300, VF_350, VF_400, VF_450, VF_500. When I do an 'ls' it arranges the files in the following way VF_100, VF_150, VF_250, VF_300, VF_350, VF_400, VF_450, VF_50, VF_500. Is there a way to... (2 Replies)
Discussion started by: lost.identity
2 Replies

9. Shell Programming and Scripting

Deleting particular files with a numerical suffix

Hello I have a directory with a list of files which have a particular numerical suffix. E.g filename_0 filename_1 filename_18500 filename_10000 I want to delete all files from this directory which have a filename which have a numerical suffix greater than 10540. So any files... (5 Replies)
Discussion started by: kamal_p_99
5 Replies

10. Shell Programming and Scripting

How to create files with two or more variables in its names?

Hi all, Iam writing a perl script to create many files with variables in their name. i am able to do it, if iam using only one variable. But with two variables the file names are NOT getting generated in the way i want. plz help me out. 1. open(SHW,">divw_unsigned_50_50_$k.reset") or die... (4 Replies)
Discussion started by: twistedpair
4 Replies

LEARN ABOUT REDHAT

amgetconf

AMGETCONF(8)						      System Manager's Manual						      AMGETCONF(8)

NAME

       amgetconf - look up amanda.conf variables

SYNOPSIS

       amgetconf [ config ] parameter

DESCRIPTION

       Amgetconf  looks  up parameters in amanda.conf, the Amanda configuration file, or from the build and runtime environment, and returns their
       corresponding value.

       If config is not specified, amgetconf assumes it is being run from the configuration directory and that amanda.conf is present.

       If parameter begins with build., the (case insensitive) string following the period is a build environment variable.  Variables	without  a
       value (e.g. XFSDUMP on a system that does not support that type of file system) will not report an error and will return an empty string as
       the value.  Flag variables (e.g. USE_AMANDAHOSTS) will return 1 if the flag is set or an empty string if it is not.

       If parameter begins with dbopen., the string following the period is a program name and an Amanda debug file will be created for the  call-
       er.  The name of the file is returned.

       If  parameter begins with dbclose., the string following the period is a program name previously used with dbopen., followed by a colon (:)
       and the previously opened file name.

       See the amanda(8) man page for more details about Amanda.

EXAMPLE

       Find out the path to the log file directory:

	      % amgetconf DailySet1 logdir
	      /etc/amanda/DailySet1

       Find out the current tape type:

	      % amgetconf DailySet1 tapetype
	      DLT4000-IV

       Find out the default configuration directory:

	      % amgetconf DailySet1 build.CONFIG_DIR
	      /etc/amanda

       Create, use and close a debug file in a script:

	      % set debug_file = `amgetconf DailySet1 dbopen.myscript`
	      % echo debug information >> $debug_file
	      % amgetconf DailySet1 dbclose.myscript:$debug_file

MESSAGES

       amgetconf: no such parameter "param"
	      Parameter param is not a known keyword (e.g. not a valid amanda.conf keyword).  In this case, amgetconf will write "BUGGY" to stdout
	      as the value.

SEE ALSO

       amanda(8)

																      AMGETCONF(8)
All times are GMT -4. The time now is 11:26 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy