problem with while loop in BASH shell Post: 302256311

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Simple bash for loop problem

I'm just trying to make a script that runs in command line to echo each line in a text file. Everything i found on google is telling me to do it like this but when I run it it just echos removethese.txt and thats it. Anyone know what im doing wrong? for i in removethese.txt; do echo $i; done ...

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Bash while loop problem

Hi, I'm having a problem with the while loop in bash. I try the following script: #!/bin/bash while true do echo "test" done When I try this, it gives me this error: while: Too few arguments. What am I doing wrong? Thanks

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if loop not working in BASH shell

i have this code for a simple if loop: #!/bin/bash array="1 2 3 4 5" array2="5 6 7 8 9" if } -gt ${array} ]; then echo "${array2} is greater than ${array}!!" fi the error is ./script8: line 9: [: too many arguments ./script8: line 9: [: too many arguments ./script8: line 9: [:...

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Anyone know?: How the 'for'-loop could stop working in interactive bash shell?!

It is happening with my sessions already second time: a 'for'-loop for some reason stop to work as expected. That means or it is looping without exitting, or it is not loop even once. Here example of my try when it is not processing even one loop. You can see, I start new subshell and...

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hi i was trying to optimize one script and i came across this problem .. i am putting some pseudo code here $ >cat a.sh ls | while read I do i=$(($i + 1)) done echo "total no of files : " $ >ksh a.sh total no of files : $ >bash a.sh total no of files : why is...

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Problem with for loop in bash

I'm trying to do a script where I want to see if all users home directories are only writable by owner. However, in my script I do not know how to implement the for loop so that all directories are checked. In mine, I am only checking the permissions for the first directory found. I do know that a...

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problem access array outside of loop in bash

Below is a test script I was trying to use so that I could understand why the logic was not working in a larger script. While accessing and printing array data inside the while loop, everything is fine. Outside the loop, i guess everything is null?? The for loop that is meant to cycle...

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Hello, I am trying to create a matrix of 0's and 1's depending on whether a gene and sample name are found in the same line in a file called results.txt. An example of the results.txt file is (tab-delimited): Sample1 Gene1 ## Gene2 ## Sample2 Gene2 ## Gene 4 ## Sample3 Gene3 ...

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For loop in bash shell

Hi, I am using a for loop to manipulate files data_1.txt through data_100.txt. The for-loop is set up like this: for i in {1..100}; do cut -f1 data_$i.txt > output$i.txt I get the following error message when I run the code: cannot open `data.txt' for reading: No such file or directory...

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Bash Shell loop - Help !

Dear all Linux lover, I am a new learner to Bash Shell script and I would like to writing a script to to repeat my script. This mean I would like to have multiple same of result after running the .sh. ####### TIMES_NO=0 echo -n "Please enter the number for times to repeat ?" read...

LEARN ABOUT MOJAVE

fddist

fddist(1m)							   USER COMMANDS							fddist(1m)

NAME

       fddist - file descriptor usage distributions. Uses DTrace.

SYNOPSIS

       fddist [-r|-w]

DESCRIPTION

       This  prints  distributions for read and write events by file descriptor, by process. This can be used to determine which file descriptor a
       process is doing the most I/O with.

       Since this uses DTrace, only users with root privileges can run this command.

OPTIONS

       -r     reads only

       -w     writes only

EXAMPLES

       Sample both read and write activity,
	      # fddist

       Sample reads only,
	      # fddist -r

FIELDS

       EXEC   process name

       PID    process ID

       value  file descriptor

       count  number of events

BASED ON

       /usr/demo/dtrace/lquantize.d

DOCUMENTATION

       DTrace Guide "Aggregations" chapter (docs.sun.com)

       See the DTraceToolkit for further documentation under the Docs directory. The DTraceToolkit docs may include full worked examples with ver-
       bose descriptions explaining the output.

EXIT

       fddist will sample until Ctrl-C is hit.

SEE ALSO

       dtrace(1M)

version 0.70							   Jun 08, 2005 							fddist(1m)

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1. Shell Programming and Scripting

Simple bash for loop problem

Discussion started by: kingdbag

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Bash while loop problem

Discussion started by: Kweekwom

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if loop not working in BASH shell

Discussion started by: npatwardhan

4. UNIX for Dummies Questions & Answers

Anyone know?: How the 'for'-loop could stop working in interactive bash shell?!

Discussion started by: alex_5161