Bash Script Iterating Question


 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Bash Script Iterating Question
# 1  
Old 10-16-2014
Bash Script Iterating Question

I am trying to look through one of my directories to remove certain files. I am pretty new to Unix and bash so I just need a little help in starting this. I know I would have to write two loops one to iterate the directories and one to iterate the files. How would I write the loops?
# 2  
Old 10-16-2014
Is this a homework assignment?

Why do you need two loops to iterate through one directory?

By what criteria will you remove certain files? What do you want to do to the files that you do not remove from consideration?

From what you have said so far, I'm not sure you need any loop; shell pattern matching might do everything you need.
# 3  
Old 10-16-2014
Quote:
Originally Posted by Don Cragun
Is this a homework assignment?

Why do you need two loops to iterate through one directory?

By what criteria will you remove certain files? What do you want to do to the files that you do not remove from consideration?

From what you have said so far, I'm not sure you need any loop; shell pattern matching might do everything you need.
It's not a homework assignment; just something I am playing with to learn UNIX. I will be starting a new job soon where they use UNIX and bash scripting so my uncle let me copy a few directories and files to work with.

I noticed a few of the files in the directories have underscores in the name and I wanted to see if I could delimit the underscores.
# 4  
Old 10-17-2014
There is a command named `find' which will do that for you
Code:
find /path/to/directory -name "*_*" -type f

That could display every file that contain an `_' in /path/to/directory and below.
This User Gave Thanks to Aia For This Post:
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. UNIX for Beginners Questions & Answers

Need a Bash script for iterating thru an array and running a command

Hi , I am a total beginner so bear with me. I have the below code which works . I need to extend it by iterating thru the array arr and executing a command in each loop. some thing on the lines of below. I need to run this in a Jenkins script , so I would need below bash script to run... (6 Replies)
Discussion started by: SVRao19056
6 Replies

2. Shell Programming and Scripting

Question on iterating array elements

Hi, I am trying to do something similar to the for loop example from KSH For Loop Array: Iterate Through Array Values $: cat y.ksh #!/bin/ksh # set array called nameservers set -A nameservers 192.168.1.1 192.168.1.5 202.54.1.5 # print all name servers for i in ${nameservers} do ... (3 Replies)
Discussion started by: newbie_01
3 Replies

3. Shell Programming and Scripting

Question about writing a bash script

Hello, I want to write a bash script to delete the content after '#'. However, if '#' appears in a string with "", ignore this. For example, input file: test #delete "test #not delete" Output file: test "test #not delete" Does anyone know how to write this script? Thanks (1 Reply)
Discussion started by: jeffwang66
1 Replies

4. Shell Programming and Scripting

Question in bash script.

Hi All, I need an assistance with the issue below. I wrote big script in "bash" that automatically install an LDAP on Clients. I'd be happy to know in order to avoid duplication of entries in files, How i can define into the script, if the specific expressions already exist in the file, do... (7 Replies)
Discussion started by: Aviel.shani
7 Replies

5. Shell Programming and Scripting

Bash script - loop question

Hi Folks, I have a loop that goes through an array and the output is funky. sample: array=( 19.239.211.30 ) for i in "${array}" do echo $i iperf -c $i -P 10 -x CSV -f b -t 50 | awk 'END{print '$i',$6}' >> $file done Output: 19.239.211.30 19.2390.2110.3 8746886 seems that when... (2 Replies)
Discussion started by: nitrohuffer2001
2 Replies

6. Shell Programming and Scripting

bash Script: Issue with iterating Directory and store into array

Hi all, I am working on a backup based script, in which it enters to a directory and check the sub-directories and copy the names into an array. cd $CPFs k=0 for i in * do if then ARRs="$i" k=$(($k+1)) #echo "$i" ... (19 Replies)
Discussion started by: canishk
19 Replies

7. Shell Programming and Scripting

bash script question

Can anybody be kind to explaing me what the lines below mean ? eval line=$line export $line ] || echo $line (2 Replies)
Discussion started by: jville
2 Replies

8. Shell Programming and Scripting

BASH script question

Hi, I want to create a script that gets a filename as an argument. The script should generate a listing in long list format of the current directory, sorted by file size. This list must be written to a new file by the filename given on the command line. Can someone help me with this? ... (6 Replies)
Discussion started by: I-1
6 Replies

9. Shell Programming and Scripting

one question for bash shell script

Just one question for bash shell script. In bash script, you can use *.txt to call any files in current folder that ends with .txt, like rm *.txt will remove all txt file in current folder. My question is can you actually remember or use the file name among *.txt, I know file=*.txt will not... (9 Replies)
Discussion started by: zx1106
9 Replies

10. Shell Programming and Scripting

BASH shell script question

I want to make shell script that takes a list of host names on my network as command line arguments and displays whether the hosts are up or down, using the ping command to display the status of a host and a for loop to process all the host names. Im new to shell scripting so Im not quite sure... (3 Replies)
Discussion started by: ewarmour
3 Replies
Login or Register to Ask a Question