Sponsored Content
Top Forums Shell Programming and Scripting BASH: File name part to list reference problem. Post 302441766 by SilversleevesX on Monday 2nd of August 2010 09:19:22 AM
Old 08-02-2010
Quote:
Originally Posted by agama
I couldn't tell from your code whether the filenames had the suffix tacked onto the end (picture.jpgxxxx) or picture.xxxx.jpg. The ls command implies the latter, but you seem to be stripping off xxxx as the trailing 4 characters. You might be getting tripped up with this too. If you post a sample of filenames and a sample of your text file, it'd make giving suggestions a bit easier.
They were more like this (a current example right from the "victim" directory):
Code:
gae72-7201-077-005biki.jpg

My rename script, which I run once these have been annotated according to the four letters preceding the ".", chops off that four-letter substring with what you saw in my script in this thread as the 'puregrain' variable (in the other script, it's an m.)

Quote:
Nitpicking now.... the statement

Code:
souse=$(echo $line)

can be written more simply:

Code:
souse="$line"

This is easier to read, and depending on the shell it more efficient. There might also be ways to make sussing the field data from the text file more efficient; using external processes like 'cut' introduce overhead that can eat your lunch as far as performance is concerned.
I asked about performance and efficiency in simplification on one thread I started over on the LQ forum. The person there who was giving me advice (and has done so, before and since) was rather vague about it. If it's a shell-by-shell or build/version-by-build/version thing, I understand why now. Trial and error -- don't mind it so long as my bash will still fork commands in the morning Smilie

BZT
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

BASH: Grepping/sedding/etc out part of a file... (from one word to 'blank' line)

I have a file that lists data about a system. It has a part that can look like: the errors I'm looking for with other errors: Alerts Password Incorrect Login Error Another Error Another Error 2 Other Info or, just the errors I need to parse for: Alerts Password Incorrect ... (9 Replies)
Discussion started by: elinenbe
9 Replies

2. Shell Programming and Scripting

How to select or make reference to, part of a field

For a field format such as AAL1001_MD82, how do I select(and use in if statement) only the last four elements( in this case MD82) or the first three elements (in this case AAL)? For instance, how do I do the following - if first three elements of $x == yyy, then ... (5 Replies)
Discussion started by: akshaykr2
5 Replies

3. Shell Programming and Scripting

Array reference problem

i have a variable MYHOST that has my host name.depending on the host i have an array like A_<hostname>.Everytime i need to append the hostname to A_ to get the array.but in the shell script i am nt able to access the members of that array. code of what i hav done: export temp=A_$MYHOST for... (15 Replies)
Discussion started by: niteesh_!7
15 Replies

4. Shell Programming and Scripting

BASH - Reference external variable name dynamically

Hi there, I have included an external properties file into my BASH script via the 'source' command. I am attempting to dynamically assign a variable in the BASH script, that references the variable name within the external properties file i.e. #!/bin/bash pth=${0%/*} source... (3 Replies)
Discussion started by: mjwoodford
3 Replies

5. Shell Programming and Scripting

Replace character based on reference file problem asking

I got two files right now, input file (target file), reference file 1 (query file) reference file 1 (long list of data) KOLOPWMOPOPO ADASDASD ADSASDASDAD . . target file (one long liner content) ADASDASDTYUKOKOLOPWMOPOPOOPLUAADSASDASDADPOPOUYADADASDASD desired output file content ... (1 Reply)
Discussion started by: patrick87
1 Replies

6. Shell Programming and Scripting

Help with rename header content based on reference file problem

I got long list of reference file >data_tmp_number_22 >data_tmp_number_12 >data_tmp_number_20 . . Input file: >sample_data_1 Math, 5, USA, tmp SDFEWRWERWERWRWER FSFDSFSDFSDGSDGSD >sample_data_2 Math, 15, UK, tmp FDSFSDFF >sample_data_3 Math, 50, USA, tmp ARQERREQR . . Desired... (7 Replies)
Discussion started by: perl_beginner
7 Replies

7. Shell Programming and Scripting

symbol list reference

Can anyone direct me to a page that holds a list of perl's built in symbols? Example: $_ means blah $? means blah2 $! means blah3 (3 Replies)
Discussion started by: mrwatkin
3 Replies

8. Programming

Passing Pointers by reference in C++ Problem

Hello All, I am having this issue...where I am actually having hard time understanding the problem: The code is as follows: #include<iostream.h> void fxn(char*** var) { int i =4; *var = (char**)malloc(i*sizeof(char*)); for(int j =0; j<4; j++) { *var = "name"; cout<<*var;... (6 Replies)
Discussion started by: mind@work
6 Replies

9. Shell Programming and Scripting

Shell Scripting Problem - Invalid Back Reference

Here is the question... Create a new script, sub2, taking three parameters... 1.) the string to be replaced 2.) the string with which to replace it 3.) the name of the file in which to make the substitution ...that treats the string to be replaced as plain text instead of as a regular... (1 Reply)
Discussion started by: johnhisenburg
1 Replies

10. Shell Programming and Scripting

Bash compare a list of file

Dear all, I believe this is a Bash basic question... I am bit ashamed for asking actually... I want to create a Bash script that compares 2 different folders: 1) work_folder and 2) work_folder.git #!/bin/bash FOLDER_NAME=`pwd | awk -F/ '{ print $NF }' | awk -F. '{ print $1 }'` ... (6 Replies)
Discussion started by: freddie50
6 Replies
pfsinhdrgen(1)						      General Commands Manual						    pfsinhdrgen(1)

NAME
pfsinhdrgen - Create a pfs stream with different exposures defined by hdrgen script. SYNOPSIS
pfsinhdrgen <sample.hdrgen> DESCRIPTION
This program reads files defined in given hdrgen script and outputs them in a PFS stream. Each frame has a tag BV with corresponding brightness value (APEX standard). Larger BV corresponds to less exposure (darker image), necessary to capture a bright scene. The generated PFS stream is to be used with photo-metric calibration software and with generators of HDR images. HDRGEN script file is a plain text file in which each line contains: <path_to_an_image> <inverse_of_exposure_time_in_seconds> <aper- ture_size> <iso_speed> 0 In most cases it is convenient to use the jpeg2hdrgen program to create such a file automatically. In case it could not parse the exif information from jpeg files, it is necessary to create this file by hand. Below are the sample contents of such file: <--- cut here: sample.hdrgen /var/tmp/images/img08.jpg 4 2.8 100 0 /var/tmp/images/img09.jpg 58.8235 2.8 100 0 /var/tmp/images/img10.jpg 76.9231 2.8 100 0 /var/tmp/images/img11.jpg 322.581 2.8 100 0 /var/tmp/images/img12.jpg 400 2.8 100 0 <--- cut here: sample.hdrgen EXAMPLES
pfsinhdrgen sample.hdrgen | pfsview View exposures defined in sample.hdrgen script. SEE ALSO
jpeg2hdrgen(1) pfshdrcalibrate(1) BUGS
Please report bugs and comments on implementation to Grzegorz Krawczyk <gkrawczyk@users.sourceforge.net>. pfsinhdrgen(1)
All times are GMT -4. The time now is 07:03 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy