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Full Discussion: Abnormality while piping tr command output to sed
Top Forums Shell Programming and Scripting Abnormality while piping tr command output to sed Post 302746537 by chidori on Wednesday 19th of December 2012 03:16:40 PM
Old 12-19-2012
I have the file in unix system only and i dont see any any extra character. I am using solaris 10 .
Code:
# cat myfile
alpha
beta
gamma

# od -c myfile
0000000   a   l   p   h   a  \n   b   e   t   a  \n   g   a   m   m   a
0000020  \n
0000021
#

Code:
# tr -s '\n' ',' < myfile | sed 's/,$//'
#

I have tried this with bourne and bash shell. not same result.

sed path : /bin/sed

I tried with xpg4 path and output looks promising but with a warning message

Code:
# tr -s '\n' ',' < myfile | /usr/xpg4/bin/sed 's/,$//'
sed: Missing newline at end of file standard input.
alpha,beta,gamma

---------- Post updated at 03:16 PM ---------- Previous update was at 03:10 PM ----------

@Don Cragun your code worked. I am not able to get the point on why this behaviour is seen. why does a strip of trailing newlines piped to sed/awk wont work ?
 

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LEARN ABOUT DEBIAN

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)
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