Login or Register to Ask a Question and Join Our Community


Shell Programming and Scripting

for loop doesn't work

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting for loop doesn't work
# 1  
Old 12-30-2008
for loop doesn't work
I have a script which uses below for loop:

for (( i = 0 ; i <= 5; i++ ))
do
echo "Welcome $i times"
done

But when I run the script, it gives error message:
Syntex Error : Bad for loop variable

Can anyone guide to run it?

Thanks in advance.
# 2  
Old 12-30-2008
for ((a=1; a <= LIMIT ; a++)) # Double parentheses, and "LIMIT" with no "$".
do
echo -n "$a "
done

- nilesh
Last edited by ynilesh; 12-30-2008 at 01:35 AM..
# 3  
Old 12-30-2008
Nilesh, thanks for quick response.
What should be syntex to get the required output?

Please respond.

Deepak
# 4  
Old 12-30-2008
Code:
$ for (( i = 0 ; i <= 5; i++ )); do echo "Welcome $i times"; done

$ for i in $(seq 0 5); do echo "Welcome $i times"; done

$ for i in `seq 0 5`; do echo "Welcome $i times"; done

$ for i in 0 1 2 3 4 5; do  echo "Welcome $i times"; done

// Jadu
# 5  
Old 12-30-2008
hay deepak..... run your script with bash instead if running it as sh.

- nilesh
# 6  
Old 12-30-2008
Hi Nilesh/Jaduks,
Thanks for quick suggestions. You guys are making this forum more relevent. Keeping helping like this. Thanks a ton again.


Deepak
# 7  
Old 12-30-2008
What was the mistake in the first script I sent?
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

-ne 0 doesn't work -le does

Hi, I am using korn shell. until ] do echo "\$# = " $# echo "$1" shift done To the above script, I passed 2 parameters and the program control doesn't enter inside "until" loop. If I change it to until ] then it does work. Why numeric comparison is not working with -ne and works... (3 Replies)
Discussion started by: ab_2010
3 Replies

2. Shell Programming and Scripting

Why my awk doesn't work?

root@SDP_Wildcat_Pass-3-C1:~# cat /proc/driver/rtc rtc_time : 05:29:40 rtc_date : 2014-12-19 alrm_time : 01:51:53 alrm_date : 2014-12-20 alarm_IRQ : no alrm_pending : no update IRQ enabled : no periodic IRQ enabled : no periodic IRQ... (4 Replies)
Discussion started by: yanglei_fage
4 Replies

3. UNIX for Dummies Questions & Answers

Why doesn't this work?

find . -name "05_scripts" -type d -exec mv -f {}/'*.aep\ Logs' {}/.LogFiles \; Returns this failure: mv: rename ./019_0120_WS_WH_gate_insideTEST/05_scripts/*.aep\ Logs to ./019_0120_WS_WH_gate_insideTEST/05_scripts/.LogFiles/*.aep\ Logs: No such file or directory I don't know why it's trying... (4 Replies)
Discussion started by: scribling
4 Replies

4. Solaris

shutdown -y -i5 -g0 DOESN'T work

hello, The command above seems not working on my solaris 8/9 sparc machines. a. resulted to the ff below when I instead use "shutdown" only. Broadcast Message from root (pts/1) on "hostname" date.. The system "hostname" will be shut down in 30 seconds THE SYSTEM bdosg IS BEING SHUT... (4 Replies)
Discussion started by: lhareigh890
4 Replies

5. Shell Programming and Scripting

Script doesn't work in loop but does if not

I have a script that only works if I remove it from the looping scenario. #!/bin/bash # Set the field seperator to a newline ##IFS=" ##" # Loop through the file ##for line in `cat nlist.txt`;do # put the line into a variable. ##dbuser=$line echo "copying plugin..." ... (6 Replies)
Discussion started by: bugeye
6 Replies

6. Shell Programming and Scripting

tail -XXX with grep doesn't work in while loop

Hi all, I need some help. my shell script doesn't work especially in the loop. #!/bin/sh -xv export ORA_ADMIN=/oracle/home/admin export ORACLE_SID=ORA_SID cat ${ORA_ADMIN}/param_alert_log.ora | while read MSG do #echo $MSG #echo "tail -400... (8 Replies)
Discussion started by: sidobre
8 Replies

7. Shell Programming and Scripting

Lipo doesn't work

Hi guys, Am using lipo to merge ppc and i386 version of a static/dylib file based on "file type to load". I am working on Mac OS 10.5.6 and new to shell scripting. Please help me out. This is my code. echo "This file combine ppc and i386 file to form universal library" echo "source... (4 Replies)
Discussion started by: vishwesh
4 Replies

8. UNIX for Dummies Questions & Answers

Script doesn't work, but commands inside work

Howdie everyone... I have a shell script RemoveFiles.sh Inside this file, it only has two commands as below: rm -f ../../reportToday/temp/* rm -f ../../report/* My problem is that when i execute this script, nothing happened. Files remained unremoved. I don't see any error message as it... (2 Replies)
Discussion started by: cheongww
2 Replies

9. UNIX for Dummies Questions & Answers

Why script For...Loop doesn't work. Seek help

I have written a script to run on UNIX server. When I tested, it always hanged on after "date +"%D %T: XXXXXX script started." part. Then it wouldn't go further. UNIX server gave me one error message. I used the same code in another script. It works fine. I think the major problem may be in... (3 Replies)
Discussion started by: duke0001
3 Replies

10. Shell Programming and Scripting

Why doesn't this work?

cat .servers | while read LINE; do ssh jason@$LINE $1 done exit 1 ./command.ksh "ls -l ~jason" Why does this ONLY iterate on the first server in the list? It's not doing the command on all the servers in the list, what am I missing? Thanks! JP (2 Replies)
Discussion started by: jpeery
2 Replies
Login or Register to Ask a Question