Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Echo not working with $
Top Forums Shell Programming and Scripting Echo not working with $ Post 302949842 by neutronscott on Thursday 16th of July 2015 01:17:53 PM
Old 07-16-2015
You also shouldn't use for to read a file. If you have envsubst you can pipe it to a while read loop. See below how this looks:

Code:
mute@tiny:~$ cat file-list
$PATH1/file1.txt
$PATH2/file2.txt
mute@tiny:~$ export PATH1=/path1/here; export PATH2=/another/path
mute@tiny:~$ envsubst < file-list
/path1/here/file1.txt
/another/path/file2.txt
mute@tiny:~$

Use like so

Code:
mute@tiny:~$ ./script
file /path1/here/file1.txt doesn't exist
file /another/path/file2.txt doesn't exist
mute@tiny:~$ cat script
#!/bin/sh

envsubst '$PATH1 $PATH2' < FILE.txt |
while read file; do
        if [ -e "$file" ]; then
                echo rm "$file"
        else
                echo "file $file doesn't exist"
        fi
done

This User Gave Thanks to neutronscott For This Post:
ekharvi
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Echo working funny

Hello, this is my first post and question. I have search before for this problem but didn't find anything similar. My case: I have a string inside the variable string1 like this: string1="lala lele lili lolo lulu" When I do echo of it, it appears like this: echo $string1 lala lele lili... (8 Replies)
Discussion started by: hemtar
8 Replies

2. Shell Programming and Scripting

Difference between using "echo" builtin and /bin/echo

So in my shell i execute: { while true; do echo string; sleep 1; done } | read line This waits one second and returns. But { while true; do /bin/echo string; sleep 1; done } | read line continues to run, and doesn't stop until i kill it explicitly. I have tried this in bash as well as zsh,... (2 Replies)
Discussion started by: ulidtko
2 Replies

3. UNIX for Dummies Questions & Answers

How to correctly use an echo inside an echo?

Bit of a weird one i suppose, i want to use an echo inside an echo... For example... i have a script that i want to use to take users input and create another script. Inside this script it creates it also needs to use echos... echo "echo "hello"" >$file echo "echo "goodbye"" >$file ... (3 Replies)
Discussion started by: mokachoka
3 Replies

4. UNIX for Dummies Questions & Answers

Is echo $variable >> text.txt working in MacOSX?

Hi New at this, but want to learn more. I'm trying this as an Shell Command in MacOSX; newdate='<TIME>' echo $newdate >> /Users/ttadmin/Desktop/test.txt And it don't work. But if I just use; echo <TIME> >> /Users/ttadmin/Desktop/test.txt (<TIME> is an variable that one program... (6 Replies)
Discussion started by: jackt
6 Replies

5. Shell Programming and Scripting

why the set rr='echo string|cut not working

I am new to the c shell script, can you let me know why the set rr= is not working. C shell script #! /bin/csh Set tt= 12345_UMR_BH452_3_2.txt set rr='echo $tt | cut –d”_” -f1' syntax error (4 Replies)
Discussion started by: jdsignature88
4 Replies

6. Shell Programming and Scripting

With that logic this echoes "echo". Question about echo!

echo `echo ` doesn't echoes anything. And it's logic. But echo `echo `echo ` ` does echoes "echo". What's the logic of it? the `echo `echo ` inside of the whole (first) echo, echoes nothing, so the first echo have to echo nothing but echoes "echo" (too much echoing :P):o (2 Replies)
Discussion started by: hakermania
2 Replies

7. Shell Programming and Scripting

echo is not working as expected

for i in `cat /export/home/afahmed/Arrvial_time.txt` do echo $i echo $i | awk '$3 < $D { print $4 }' >> dynamic_DF.txt; done When i echo, its echo as Nov 15 02:24 /export/home/pp_adm/inbound//wwallet_20111115.txt where i expect it to be Nov 15 02:24... (7 Replies)
Discussion started by: afahmed
7 Replies

8. Shell Programming and Scripting

echo two variables like the paste command is not working

Dear all, I have two files like this file1 A B C D E F file2 1,2 3,4 5,6 I want this output output_expected A B 1,2 C D 3,4 E F 5,6 (3 Replies)
Discussion started by: valente
3 Replies

9. Shell Programming and Scripting

Echo command not working in the script

HI I have and echo command which works perfectly in the shell but when i execute in the script it gives me an error code query is as below QUERY=`echo "Select Severity,Dupl_count,Creation_Time,Last_Received,Node_Name,Node_Name,Object,Message_Group,Message_Text,Last_Annotation from " \ ... (2 Replies)
Discussion started by: Jcpratap
2 Replies

10. Shell Programming and Scripting

Disk Space Utilization in HTML format working in one environment and not working on the other

Hi Team, I have written the shell script which returns the result of the disk space filesystems which has crossed the threshold limit in HTML Format. Below mentioned is the script which worked perfectly on QA system. df -h | awk -v host=`hostname` ' BEGIN { print "<table border="4"... (13 Replies)
Discussion started by: Harihsun
13 Replies

LEARN ABOUT NETBSD

mixerctl.conf

MIXERCTL.CONF(5)					      BSD File Formats Manual						  MIXERCTL.CONF(5)

NAME

     mixerctl.conf -- audio mixer configuration file

SYNOPSIS

     mixerctl.conf

DESCRIPTION

     The /etc/mixerctl.conf file consists of mixerctl(1) variables to set at boot time.  Each line of mixerctl.conf has the following format:
	   variable=value

     To generate a mixerctl.conf from the current mixer settings, execute:
	   mixerctl -a > /etc/mixerctl.conf

     Set mixerctl to YES in rc.conf(5) to have the variables set at boot time.	Additionally, you can have the settings saved and restored for the
     devices of your choice by listing them in mixerctl_mixers in rc.conf(5).

FILES

     /etc/mixerctl.conf

EXAMPLES

     Example mixer settings for an esa(4) audio adapter:

     outputs.master=255,255
     outputs.master.mute=off
     outputs.mono=255
     outputs.mono.mute=on
     outputs.mono.source=mixerout
     outputs.headphones=255,255
     outputs.headphones.mute=off
     outputs.tone=255,255
     inputs.speaker=255
     inputs.speaker.mute=off
     inputs.phone=191
     inputs.phone.mute=on
     inputs.mic=191
     inputs.mic.mute=on
     inputs.mic.preamp=off
     inputs.mic.source=mic0
     inputs.line=191,191
     inputs.line.mute=on
     inputs.cd=191,191
     inputs.cd.mute=on
     inputs.video=255,255
     inputs.video.mute=off
     inputs.aux=255,255
     inputs.aux.mute=off
     inputs.dac=191,191
     inputs.dac.mute=off
     record.source=mic
     record.volume=255,255
     record.volume.mute=off
     record.mic=0
     record.mic.mute=off
     outputs.loudness=off
     outputs.spatial=off
     outputs.spatial.center=0
     outputs.spatial.depth=0

SEE ALSO

     mixerctl(1), rc.conf(5)

HISTORY

     The mixerctl.conf configuration file first appeared in NetBSD 2.0.

BSD
								   April 5, 2003							       BSD
All times are GMT -4. The time now is 01:32 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy