Visit Our UNIX and Linux User Community


bc command


 
Thread Tools Search this Thread
Top Forums UNIX for Dummies Questions & Answers bc command
# 1  
Old 07-30-2001
Tools bc command

I need to understand the bc command in UNIX. Can someone help me on this one.Smilie
# 2  
Old 07-30-2001
Calculator

Did you try to use the man page already? bc is a nifty mathematics program that usually serves as a UNIX desktop calculator:

Quote:
$ bc
7 * 9
63
quit
# 3  
Old 07-30-2001
hi, yes I did, but i need that inside a script....this is the problem...and also, if you use a number with a decimal for example 198.7 and 78.5 in a script, how do u use the bc command to use "scale = 3", because in a script you can spesify it as follows :

TOT=` 198.7 / 78.5 | bc`

It will devide the 198 and 78, but throw away the .7 and .5

On command line you can do it :
$bc
scale = 3
198.7 / 78.5
2.531
quit
$
# 4  
Old 07-30-2001
Minor tweak

Try using:

TOT=$(echo "scale=3; 198.7/78.5")
echo $TOT
2.531

# 5  
Old 07-30-2001
thanks, but not working,

TOT=$(echo "scale=3; 198.7/78.5")
echo $TOT
scale=3; 198.7/78.5

sorry
# 6  
Old 07-30-2001
Power bc out

Of course I forgot the bc ...

TOT=$(echo "scale=3; 198.7/78.5" | bc)
echo $TOT
2.531

# 7  
Old 07-30-2001
thanks, this is working....will post a qeustion again soon...thanks againSmilie
 

Previous Thread | Next Thread
Test Your Knowledge in Computers #381
Difficulty: Medium
Solaris 9 is registered as UNIX 03 compliant on 32-bit and 64-bit x86 (X86-64) and SPARC systems
True or False?

10 More Discussions You Might Find Interesting

1. UNIX for Beginners Questions & Answers

Another one line command where I'd like to determine if Ubuntu or Red Hat when running command

Hello Forum, I'm making very good progress on my report thanks to the very helpful people on this forum. I've been able to successfully create my report for my Red Hat servers. But I do have a few ubuntu servers in the mix and I'd like to capture some data from them when an ssh connection is... (8 Replies)
Discussion started by: greavette
8 Replies

2. AIX

I'm facing problem with rpm command, when running the command and appears this error:

exec(): 0509-036 Cannot load program /usr/opt/freeware/bin/rpm because of the following errors: 0509-022 Cannot load module /opt/freeware/lib/libintl.a(libintl.so.1). 0509-150 Dependent module /opt/freeware/lib/libiconv.a(shr4.o) could not be loaded. 0509-152 Member... (4 Replies)
Discussion started by: Ohmkar
4 Replies

3. Shell Programming and Scripting

Multiple command execution inside awk command during xml parsing

below is the output xml string from some other command and i will be parsing it using awk cat /tmp/alerts.xml <Alert id="10102" name="APP-DS-ds_ha-140018-componentFailure-S" alertDefinitionId="13982" resourceId="11427" ctime="1359453507621" fixed="false" reason="If Event/Log Level(ANY) and... (2 Replies)
Discussion started by: vivek d r
2 Replies

4. Shell Programming and Scripting

SH script, variable built command fails, but works at command line

I am working with a sh script on a solaris 9 zone (sol 10 host) that grabs information to build the configuration command line. the variables Build64, SSLopt, CONFIGopt, and CC are populated in the script. the script includes CC=`which gcc` CONFIGopt=' --prefix=/ --exec-prefix=/usr... (8 Replies)
Discussion started by: oly_r
8 Replies

5. UNIX for Dummies Questions & Answers

passing command output from one command to the next command in cshell

HI Guys, I hope you are well. I am trying to write a script that gets executed every time i open a shell (cshell). I have two questions about that 1) I need to enter these commands $ echo $DISPLAY $ setenv $DISPLAY output_of_echo_$display_command How can i write a... (2 Replies)
Discussion started by: kaaliakahn
2 Replies

6. UNIX for Advanced & Expert Users

unix command : how to insert text at the cursor location via command line?

Hi, Well my title isn't very clear I think. So to understand my goal: I have a script "test1" #!/bin/bash xvkbd -text blabla with xbindkeys, I bind F5 key in order it runs my test1 script So when I press F5, test1 runs. I'm under Emacs/Vi and I press F5 in order to have "blabla" be... (0 Replies)
Discussion started by: xib.be
0 Replies

7. Shell Programming and Scripting

Need help! command working ok when executed in command line, but fails when run inside a script!

Hi everyone, when executing this command in unix: echo "WM7 Fatal Alerts:", $(cat query1.txt) > a.csvIt works fine, but running this command in a shell script gives an error saying that there's a syntax error. here is content of my script: tdbsrvr$ vi hc.sh "hc.sh" 22 lines, 509... (4 Replies)
Discussion started by: 4dirk1
4 Replies

8. AIX

AIX:Command to get netaddress/subnet address command in IPv4/IP6

AIX:Command to get netaddress/subnet address command in IPv4/IP6 Can anybody help us with a command to retrieve netaddress/subnet address command in IPv4/IP6 on aix machine. net/subnet address is in the format 172.16.212.0(signifies all 255 machines in an IPv4 network) (2 Replies)
Discussion started by: rookie8278
2 Replies

9. Shell Programming and Scripting

assign a command line argument and a unix command to awk variables

Hi , I have a piece of code ...wherein I need to assign the following ... 1) A command line argument to a variable e.g origCount=ARGV 2) A unix command to a variable e.g result=`wc -l testFile.txt` in my awk shell script When I do this : print "origCount" origCount --> I get the... (0 Replies)
Discussion started by: sweta_doshi
0 Replies

10. SuSE

inconsistent ls command display at the command prompt & running as a cron job

Sir, I using the following commands in a file (part of a bigger script): #!/bin/bash cd /opt/oracle/bin ls -lt | tail -1 | awk '{print $6}' >> /tmp/ramb.out If I run this from the command prompt the result is: 2007-05-16 if I run it as a cron job then... (5 Replies)
Discussion started by: rajranibl
5 Replies

Featured Tech Videos