Help in function returns value Post: 302937498

9 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

function returns string

Can I create a function to return non-interger value in shell script? for example, function getcommand () { echo "read command" read command echo $command } command=$(getcommand) I tried to do something as above. The statement echo "read command" does not show up. ...

2. UNIX for Dummies Questions & Answers

Grep without returns...

Is there a command where I can pipe my grep into it and it will output it with spaces rather than returns? Example I want to turn prompt$ grep blah file blah blah into this prompt$ grep blah file | someCommand blah blah

3. Shell Programming and Scripting

Function returns wrong values - solved

Hi I have a small function which returns a wrong value. The function tries to make a connection to oracle database and tries to get the open_mode of the database in the variable status. However when a database is down the value of the status column is set to READWRITE i am not sure why. I...

4. Shell Programming and Scripting

Grep returns nothing

Hi all, I am trying to grep a .txt file for a word. When I hit enter, it returns back to $ The file is 4155402 in size and is named in this way: *_eveningtimes_done_log.txt I use this command, being in the same directory as the file: grep -i "invalid" *_eveningtimes_done_log.txt ...

5. UNIX for Dummies Questions & Answers

dlsym() returns 0 for an existing function

Sometimes I observe this in gdb: (gdb) br my_function Breakpoint .. at 0x...: file ..., line ... i.e., "my_function" does exist in the current executable. however, dlsym does not find it: (gdb) p dlsym(0,"my_function") $6 = 0 This is a C program; dlsym does find other defined functions and...

6. Shell Programming and Scripting

Calculation returns no value

#/bin/sh ..... #convert memory to MB let "mmsize_a= ($mmsize)/256" let "mminuse_a= ($mminuse)/256" let "mmfree_a= ($mmsize_a -$mminuse_a)" let "mmfreepercent= (($mmfree_a)/($mmsize_a))*100" # #format output echo "\n\n######################" >>$sndFile echo "\n$sysName Total Memory usage"...

7. Shell Programming and Scripting

Function returns a value but cannot be stored in other variable

I need help to store the value returned from the function to one variable and then use that variable. PREVIOUS_DATE_FUNCTION() { date '+%m %d %Y' | { read MONTH DAY YEAR DAY=`expr "$DAY" - 1` case "$DAY" in 0) MONTH=`expr "$MONTH" - 1` case...

8. Shell Programming and Scripting

Function Returns

I'm having a little trouble returning a value from a function or calling it, I'm not quite sure. I'm calling the function here function region_lookup_with_details { results = $(set_region) echo $results } This is the function I'm calling function set_region { ...

9. Shell Programming and Scripting

Exit always returns 0

This returns 0 even when it does not delete any files. Is it because -print returns 0? RETVAL=$? Docs_Backups=/media/andy/MAXTOR_SDB1/Ubuntu_Mate_18.04/Documents_Backups/ Scripts_Backups=/media/andy/MAXTOR_SDB1/Ubuntu_Mate_18.04/Script_Backups/ # create some old files #touch -d 20120101...

LEARN ABOUT SUNOS

ppmtosixel

ppmtosixel(1)						      General Commands Manual						     ppmtosixel(1)

NAME

       ppmtosixel - convert a portable pixmap into DEC sixel format

SYNOPSIS

       ppmtosixel [-raw] [-margin] [ppmfile]

DESCRIPTION

       Reads  a  portable  pixmap  as input.  Produces sixel commands (SIX) as output.	The output is formatted for color printing, e.g. for a DEC
       LJ250 color inkjet printer.

       If RGB values from the PPM file do not have maxval=100, the RGB values are rescaled.  A printer control header and a color assignment table
       begin the SIX file.  Image data is written in a compressed format by default.  A printer control footer ends the image file.

OPTIONS

       -raw   If  specified,  each  pixel  will  be explicitly described in the image file.  If -raw is not specified, output will default to com-
	      pressed format in which identical adjacent pixels are replaced by "repeat pixel" commands.  A raw file is often an order	of  magni-
	      tude larger than a compressed file and prints much slower.

       -margin
	      If  -margin  is not specified, the image will be start at the left margin (of the window, paper, or whatever).  If -margin is speci-
	      fied, a 1.5 inch left margin will offset the image.

PRINTING

       Generally, sixel files must reach the printer unfiltered.  Use the lpr -x option or cat filename > /dev/tty0?.

BUGS

       Upon rescaling, truncation of the least significant bits of RGB values may result in poor color conversion.  If the original PPM maxval was
       greater	than  100,  rescaling  also reduces the image depth.  While the actual RGB values from the ppm file are more or less retained, the
       color palette of the LJ250 may not match the colors on your screen.  This seems to be a printer limitation.

SEE ALSO

       ppm(5)

AUTHOR

       Copyright (C) 1991 by Rick Vinci.

								   26 April 1991						     ppmtosixel(1)