Login or Register to Ask a Question and Join Our Community


UNIX for Beginners Questions & Answers

Error with while loop ksh

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums UNIX for Beginners Questions & Answers Error with while loop ksh
# 1  
Old 01-20-2020
Error with while loop ksh
Code:
while [[$a -ne 25]];do
        first[$b]=${hat[$a]}
        echo "${first[$b]}"
        b=$((b+1))
        a=$((a+5))
done

I'm trying to append values from the indicated index of one array to other, but it gives me an error with while loop....suggesting that [[0: not found [No such file or directory].......
In the hat array, it contains many values and for the name first array, I want to append value to it from the hat array at every 5 interval.......
# 2  
Old 01-20-2020
Hi
Try to insert spaces after "[" and before "]"
Code:
while [[ $a -ne 25 ]]; do

# 3  
Old 01-20-2020
Also, variables are only used without the $ sign on the left side of the = sign and there should be no space before or after the = sign.
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. UNIX for Beginners Questions & Answers

Multiple if within while loop ksh

Hi All, I'm trying to write while loop with multiple if conditions. Each and every if condition with different variables. whenever one if condition fails i have remove the file from filename and have to pick another file and loop should exit until the last file found in filename. Please help... (4 Replies)
Discussion started by: Kayal
4 Replies

2. Shell Programming and Scripting

Help with loop in ksh script

Hi, I am new to UNIX. I am working on a script where it takes the input and produces a desired output and it works fine for one instance. Input(One Instance): CREATE TABLE TAB1 ( COL1, COL2 ); CREATE UNIQUE INDEX XPKTAB1 ( COL1 )TAB1; Output: CREATE TABLE TAB1 ( COL1, COL2... (8 Replies)
Discussion started by: varun2327
8 Replies

3. Shell Programming and Scripting

Output in for loop (ksh)

Hi , I'm writing the for loop script in home directory and wanted to get the files from /etc/data directory. #!/bin/ksh file_nm="/etc/dat" for test_data in $file_nm/fln* do echo "$test_data" done the code is executing successfully , but in the output it is showing ... (6 Replies)
Discussion started by: smile689
6 Replies

4. Shell Programming and Scripting

ksh for loop

Any reason why this thing doesn't works in Korn Shell for (( expr1; expr2; expr3 )) do ..... ... repeat all statements between do and done until expr2 is TRUE Done Rgds, TS (4 Replies)
Discussion started by: targetshell
4 Replies

5. Shell Programming and Scripting

ksh loop

I need an echo "hit enter" running every 3 seconds till user hit enter key. 10x (1 Reply)
Discussion started by: LiorAmitai
1 Replies

6. Shell Programming and Scripting

ksh - for loop with variables

Hi, I 'm trying to send an e-mail for every different line in the .txt for i in {1..$variable} do sed -n "/$i$/p" text.txt done I have two problems about this. First one is that for loop doesn't work and the second one is that i cant get the output of sed (4 Replies)
Discussion started by: ozum
4 Replies

7. Shell Programming and Scripting

Why does my for loop does not work right in ksh?

hi all, i have a for loop statement in my ksh code. it only returns the first value retrieved not the value for the other rows. ex: acct_id value = returned value in the for loop 1 = 1 2 = 1 (instead of 2) 3 = ... (1 Reply)
Discussion started by: ryukishin_17
1 Replies

8. Shell Programming and Scripting

Help with While loop in KSH

Hi, I want to write a while loop like this can any one say me whats wrong with my loop USAGE="Usage: Mail.ksh" integer i=3 while ((1<i<=3)) do . . . . (( CMD_JUL = LSD_JUL - i )) CUR_MAINT_DATE=$(julian2date ${CMD_JUL}) . . . i=i-1 done (1 Reply)
Discussion started by: bhagya2340
1 Replies

9. Shell Programming and Scripting

For loop in ksh..Please help..

Hi ALL, I need to take some command line arguments for my script and then want to run a function for each argument.I thought of using for loop as below, but its not working , can some one please help... #!/bin/ksh lpar1=$1 lpar2=$2 lpar3=$3 lpar4=$4 lpar5=$5 echo "$lpar1" >>lpar.txt echo... (4 Replies)
Discussion started by: prashant43
4 Replies

10. Shell Programming and Scripting

ksh while loop

hi all, got this silly problem and i just can't seem to make sense of the error message its is saying 1400: cannot open. its my first time at writing a while loop but tried all sorts to get it working without success. #!usr/bin/ksh integer max=1400 set file="afilename" integer i=1 ... (3 Replies)
Discussion started by: scriptingmani
3 Replies
Login or Register to Ask a Question