hello to everyone,
i am writing a shell script in unix and i use the following command:
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 sure that this works because if i just echo "lnum" then i can see the numbers i want to see.
the problem is with the expr because when i run the script it writes me:
expr: 0402-050 Syntax error
i cannot find what is the problem because i search everywhere and i cannot find a syntax error in this.
do you have any suggestion?
thank you for your time
Last edited by Franklin52; 01-19-2010 at 05:19 AM..
Reason: Please use code tags!
i want to get a substring from a string and used such shell script:
var_year=`expr substr "07132006" 5 4`
echo $var_year
but i got such error message: expr: syntax error. why?
Note: Kshell used on solaris 8. :confused: (5 Replies)
HELLO i have a problem i need to do this equation:
final_result=*1.5. I am using expr like this:
FINAL_RESULT=`expr (($RESULT1 + $RESULT2 / 2) \* 3) / 2` but it is wrong. Someone help me.thank you (2 Replies)
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... (2 Replies)
Hi All,
This is a piece of code from one of my scripts:
t1=`cat temp3.21447 | grep WEALTHTOUC_TRANS_20100409_233127.txt.txt.TRG | awk '{print $3}' | cut -c1-5`
t2=`cat temp3.21447 | grep WEALTHTOUC_TRANS_20100409_233127.txt.txt.TRG | awk '{print $5}' | cut -c1-5`
#t1=23:43... (5 Replies)
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... (3 Replies)
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... (1 Reply)
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... (6 Replies)
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... (6 Replies)
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... (1 Reply)
Discussion started by: nms
1 Replies
LEARN ABOUT ULTRIX
expr
expr(1) General Commands Manual expr(1)Name
expr - evaluate expressions
Syntax
expr arg...
Description
The arguments are taken as an expression. After evaluation, the result is written on the standard output. Each token of the expression is
a separate argument.
The operators and keywords are listed below. The list is in order of increasing precedence, with equal precedence operators grouped.
expr | expr Yields the first expr if it is neither null nor 0. Otherwise yields the second expr.
expr & expr Yields the first expr if neither expr is null or 0. Otherwise yields 0.
expr relop expr The relop is one of < <= = != >= > and yields 1 if the indicated comparison is true, '0' if false. The comparison is
numeric if both expr are integers, otherwise lexicographic.
expr + expr
expr - expr
Yields addition or subtraction of the arguments.
expr * expr
expr / expr
expr % expr
Yields multiplication, division, or remainder of the arguments.
expr : expr The matching operator compares the string first argument with the regular expression second argument; regular expres-
sion syntax is the same as that of The (...) pattern symbols can be used to select a portion of the first argument.
Otherwise, the matching operator yields the number of characters matched ('0' on failure).
( expr ) parentheses for grouping.
Examples
The first example adds 1 to the Shell variable a:
a=`expr $a + 1`
The second example finds the file name part (least significant part) of the pathname stored in variable a,
expr $a : '.*/(.*)' '|' $a
Note the quoted Shell metacharacters.
Diagnostics
The command returns the following exit codes:
0 The expression is neither null nor '0'.
1 The expression is null or '0'.
2 The expression is invalid.
See Alsoed(1), sh(1), test(1)expr(1)