Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Last line in while do function being ignored
Top Forums Shell Programming and Scripting Last line in while do function being ignored Post 303016335 by durden_tyler on Tuesday 24th of April 2018 03:58:11 PM
Old 04-24-2018
Quote:
Originally Posted by Hvieira
...
...
EDIT: So I found out the script works correctly if the Description example has more than one line. However, if it's only one line, it doesn't. Is there any logic that I'm missing here?
...
...
Upon searching about this topic in the Internet, I found that the "read" command may be unable to read a line that is not terminated by a newline.
However, I could not test it in my Cygwin Bash on Win 7 setup. If I create an input file that has your email input and remove "\n" from the end of the "Description" line, the script still works.

With "printf" though, I see that read fails if the "\n" is missing:

Code:
$
$ (printf "%s\n%s\n" "the woods are lovely" "dark and deep") | while read line; do echo $line; done
the woods are lovely
dark and deep
$
$ (printf "%s\n%s" "the woods are lovely" "dark and deep") | while read line; do echo $line; done
the woods are lovely
$
$

Could you confirm if the "pbpaste" command adds a newline at the end of the "Description" line?
For example, if you type "pbpaste" on the $ prompt of the Terminal, does the next prompt occur on its own line or right after the "Description" text?

If it is the latter, then the following code change might help:
Code:
echo "$(pbpaste)" | while read line ; do
    <process_line>
done

(I don't have a Mac and don't have much idea about pbpaste - this is just a hunch.)
This User Gave Thanks to durden_tyler For This Post:
Hvieira
 

10 More Discussions You Might Find Interesting

1. AIX

function trace back and address to line number conversion

Hi, I am new to AIX and I am developing a small tool for our product which helps debug memory leaks etc. Q1)Is there a way in which i can get a function trace back as to the call (lets say malloc() )has been made in which file--> in which function. I tried using the #pragma options (... (0 Replies)
Discussion started by: Wkdunreal
0 Replies

2. Shell Programming and Scripting

How to send a function all command line args?

I have this code, I thought it would automatically know the args sent to script when called from shell. But it seems to not see any... main script: . args . errors . opt . clean dbfile="" opfile="" # calls function in script below chkarg #check commands (2 Replies)
Discussion started by: gcampton
2 Replies

3. Homework & Coursework Questions

I need to make a script that has 4 command line arguments to function properly.

I have no idea what the following means. The teacher is too advanced for me to understand fully. We literally went from running a few commands over the last few months to starting shell scripting. I am not a programmer, I am more hardware oriented. I wish I knew what this question was asking... (3 Replies)
Discussion started by: Wookard
3 Replies

4. Shell Programming and Scripting

[SOLVED] Awk one line to sum up a function

I need help with debugging an error in my awk script. I have a shell script with variable named U_new_i and want to pass it to awk for use in a summation. The original file have the following content. cat test.txt -2445.7132000000 -2444.9349000000 -2444.3295000000 -2443.1814000000 ... (0 Replies)
Discussion started by: Quantum_Dot
0 Replies

5. Shell Programming and Scripting

Help reading each line and in a function

I have a text file with file names, id like to have this portion of my BASH script go grab the line (which in this case is the full path to my file) then cat that file so I could pipe it to a email. 1) My text file (/tmp/1.txt) is setup like this: ... (3 Replies)
Discussion started by: binary-ninja
3 Replies

6. Programming

Why does gdb stop at a different line than “i b” shows while returning from function?

Here is the program I am trying to debug: #include <stdio.h> int i = 5; int main(void) { int x = 3; display(x); return 0; } void display(int x) { for ( i=0; i<x; ++i ) { printf("i is %d.\n", i); } }This code is coming from here Peter's gdb Tutorial: Stepping... (2 Replies)
Discussion started by: ijustneeda
2 Replies

7. Shell Programming and Scripting

Avoid single line output from function

I am new to shell scripting and wished to get few things clarified. While calling functions within shell script, output comes out as single line irrespective of the no of echos or newlines I tried within function + the echo -e used to invoke function ( as instructed online) : #!/bin/sh inc() {... (1 Reply)
Discussion started by: RMath
1 Replies

8. How to Post in the The UNIX and Linux Forums

GREP function in ksh which ignores LINE Breaks

I am using a grep command with two patterns in my KSH script. File has line breaks in it and both the patterns are in different lines. Here is the command - grep -l 'RITE AID.*ST.820' natriter820u.20140914 Pattern1 - RITE AID Pattern2 - ST*820 I am not getting any results from this,... (3 Replies)
Discussion started by: Raghav Garg
3 Replies

9. UNIX for Dummies Questions & Answers

GREP function in ksh which ignores LINE Breaks

Hello I am using a grep command with two patterns in my KSH script. File has line breaks in it and both the patterns are in different lines. Here is the command grep -l 'RITE AID.*ST.820' natriter820u.20140914 Pattern1 - RITE AID Pattern2 - ST*820 I am not getting any results from... (24 Replies)
Discussion started by: Raghav Garg
24 Replies

10. UNIX for Beginners Questions & Answers

How to find encapsulating function name from line number?

I am looking at a log file which just tells me the filename and the line number inside that file that has the Error. What I am interested is knowing the encapsulating function. For example, here are the contents of the log file Error: foo.file on line wxy Error: foo.file... (3 Replies)
Discussion started by: kaaliakahn
3 Replies

LEARN ABOUT NETBSD

set_color

set_color(1)							       fish							      set_color(1)

NAME

       set_color - set_color - set the terminal color

set_color - set the terminal color
   Synopsis
       set_color [-v --version] [-h --help] [-b --background COLOR] [COLOR]

   Description
       Change the foreground and/or background color of the terminal. COLOR is one of black, red, green, brown, yellow, blue, magenta, purple,
       cyan, white and normal.

       o -b, --background Set the background color

       o -c, --print-colors Prints a list of all valid color names

       o -h, --help Display help message and exit

       o -o, --bold Set bold or extra bright mode

       o -u, --underline Set underlined mode

       o -v, --version Display version and exit

       Calling set_color normal will set the terminal color to whatever is the default color of the terminal.

       Some terminals use the --bold escape sequence to switch to a brighter color set. On such terminals, set_color white will result in a grey
       font color, while set_color --bold white will result in a white font color.

       Not all terminal emulators support all these features. This is not a bug in set_color but a missing feature in the terminal emulator.

       set_color uses the terminfo database to look up how to change terminal colors on whatever terminal is in use. Some systems have old and
       incomplete terminfo databases, and may lack color information for terminals that support it. Download and install the latest version of
       ncurses and recompile fish against it in order to fix this issue.

Version 1.23.1							  Sun Jan 8 2012						      set_color(1)
All times are GMT -4. The time now is 12:00 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy