expr: syntax error Post: 302413557

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1. Shell Programming and Scripting

expr: syntax error. why?

i want to get a substring from a string and used such shell script: var_year=`expr substr "07132006" 5 4` echo $var_year but i got such error message: expr: syntax error. why? Note: Kshell used on solaris 8. :confused:

2. Shell Programming and Scripting

getting error with expr

sum=0; cat op_api2 |while read word1 word2; do echo $word2 sum=`expr $word2 + $sum`; done echo $sum op_api2 ( file has this data ) ---------------------------- UsageSummary 1034 UsageSummary 1675 UnbilledUsage 175 UnbilledUsage 177 UnbilledUsage 177 UnbilledUsage 194 I want the...

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expr syntax

HELLO i have a problem i need to do this equation: final_result=*1.5. I am using expr like this: FINAL_RESULT=`expr (($RESULT1 + $RESULT2 / 2) \* 3) / 2` but it is wrong. Someone help me.thank you

4. Shell Programming and Scripting

expr error in ksh

Hi ALL, i am so much confused y the following script is not working in the korn shel which works in bash shell. please solve the error that i am facing. i want to extract the format of the size from a variable i.e. GB or KB or MB or B or BYTES code: -------- size_dir_pass=1.2gb...

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expr - Syntax error

hello to everyone, i am writing a shell script in unix and i use the following command: lnum= cut -f 1 -d : aa passline=`expr $lnum + 1` echo "$passline" with the following command i get the value that is stored in the first field of the file "aa" and i save it in the variable "lnum". i am...

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expr/bc syntax issue

Hi, I am facing issues in my shell script while trying to add two variables. Look at the snippet below for details: # Initially variable SAMPLE1 and SAMPLE2 are set from different sources. Have trucated decimal to avoid numeric errors in expr SAMPLE1=`/usr/bin/top -n 1 | head -3 | tail -1...

7. Shell Programming and Scripting

Expr Syntex error

Hello, I am new to Shell programing. I want to add two numbers & show result. command I use are as under Echo Enter the two numbers read number d1 = ` expr $ num%10` num = `expr $ num/10` d2 = ` expr $ num%10` num = `expr $ num/10` sum = $ d1 + $ d2 echo the sum is $ sum I am getting...

8. Shell Programming and Scripting

Error with expr - "expr: syntax error"

Hi All, I'm writing a shell script in KSH, where I want to store the filename, total record count and actual record count of all the source files. The source files reside in 4 different sub-folders under the same root folder. Below is code: #!/usr/bin/ksh...

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How to lclear "expr: syntax error" eventhough everything looks fine?

Hi All, As per my knowledge in unix, my code looks fine. But still I am getting error (expr:syntax error). Please help me to resolve this error. Script : PRE_LBNO=0 PRE_DATE=0 TOT_PAY=0 TOT_REM=0 TOTAL=1 for Record_Type in `cut -c 1 Inputt.dat` do if ; then CURR_LBNO=` cut -c...

10. Shell Programming and Scripting

Expr: non-numeric argument syntax error on line 1, teletype

Hi, I tried to look up the issue i'm experiencing, but i'm confused what's wrong with my script. After executing the script I'm getting the following error expr: non-numeric argument syntax error on line 1, teletype After some research, it seems that the problem relates to bc. I have...

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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)

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

expr: syntax error. why?

Discussion started by: robin.zhu

2. Shell Programming and Scripting

getting error with expr

Discussion started by: bishweshwar

3. UNIX for Dummies Questions & Answers

expr syntax

Discussion started by: psalas

4. Shell Programming and Scripting

expr error in ksh

Discussion started by: G.K.K