1. Shell Programming and Scripting

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)

2. Shell Programming and Scripting

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... (2 Replies)

3. UNIX for Dummies Questions & Answers

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)

4. Shell Programming and Scripting

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)

5. UNIX for Dummies Questions & Answers

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... (2 Replies)

6. Shell Programming and Scripting

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)

7. Shell Programming and Scripting

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)

8. Shell Programming and Scripting

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)

9. Homework & Coursework Questions

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)

10. Shell Programming and Scripting

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)