BASH loop inside a loop question Post: 302453414

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

while loop inside while loop

Dear All, i have a awk script where i'm using while loop inside while loop here is the code: awk -v DATE="$CURRDATE" -v -F'@' 'BEGIN { while(( getline < "Merge_Calldet.txt" )) { ARR=$5 LINE=$0 while(( getline < "Merge_Accessnum.txt" )) { TESTSIMENTRY=$1 FILEDATE=$15 ...

2. Shell Programming and Scripting

Using variables created sequentially in a loop while still inside of the loop [bash]

I'm trying to understand if it's possible to create a set of variables that are numbered based on another variable (using eval) in a loop, and then call on it before the loop ends. As an example I've written a script called question (The fist command is to show what is the contents of the...

3. Shell Programming and Scripting

Is it possible to have a for loop inside another for loop?

Is it possible to have a for loop nested inside another for loop? I am trying to run a script against specific files inside a child directory but I can't seem to find a solution that is clean and affect to do it. Here is what I am trying do. I have 2 gzip files in each of the Target Directories...

4. Shell Programming and Scripting

For Loop inside For loop

I am new to unix and trying to make a script for writing all my command into another file and use that file to run all commands I am trying to use for loop with echo command to generate a command based script for writing the file with all the command sequentially w.r.t for loop. I want...

5. UNIX for Dummies Questions & Answers

while loop inside a for loop

Hi, I am a newbie and would like to create a shell script that will move one file at a time from one path to another path in the same server. However, the next file should wait until the first file gets deleted by an application. I tried creating the script but right after the first file has...

6. Shell Programming and Scripting

If inside If loop

Hi All, Below is the very simple code snippet but it si giving me syntax error #!/bin/bash #To ensure If JMS directory exists or not ServerName=$(hostname) #To ensure If JMS directory exists or not echo $ServerName if ; then echo "Inside First If" if ; then echo 'JMS...

7. Shell Programming and Scripting

Bash script - loop question

Hi Folks, I have a loop that goes through an array and the output is funky. sample: array=( 19.239.211.30 ) for i in "${array}" do echo $i iperf -c $i -P 10 -x CSV -f b -t 50 | awk 'END{print '$i',$6}' >> $file done Output: 19.239.211.30 19.2390.2110.3 8746886 seems that when...

8. Shell Programming and Scripting

Bash Question: HowTo Exit Script with User Input While Process is Running Mid-Loop?

Hi, I have written a script that allows me to repetitively play a music file $N times, which is specified through user input. However, if I want to exit the script before it has finished looping $N times, if I use CTRL+c, I have to CTRL+c however many times are left in order to complete the loop....

9. UNIX for Dummies Questions & Answers

Write a while loop inside for loop?

I'm taking a unix class and need to countdown to 0 from whatever number the user inputs. I know how to do this with a while or until loop but using the for loop is throwing me off.... I know I can use an if-then statement in my for loop but can I include a while loop in my for loop?

10. Shell Programming and Scripting

Bash - How to do a "read -p" inside a while loop?

Hi there guys! I was trying to do: while read line; do if ; then read -p "Press Enter to continue..." cont=0 fi echo $line let cont++ done < file.txt However, I have read that the read -p would not work in a while loop... I was wondering if there is any other way to...

LEARN ABOUT LINUX

checkbashisms

CHECKBASHISMS(1)                                              General Commands Manual                                             CHECKBASHISMS(1)

NAME

       checkbashisms - check for bashisms in /bin/sh scripts

SYNOPSIS

       checkbashisms script ...
       checkbashisms --help|--version

DESCRIPTION

       checkbashisms, based on one of the checks from the lintian system, performs basic checks on /bin/sh shell scripts for the possible presence
       of bashisms.  It takes the names of the shell scripts on the command line, and outputs warnings if possible bashisms are detected.

       Note that the definition of a bashism in this context roughly equates to "a shell feature that is not required to be supported  by  POSIX";
       this means that some issues flagged may be permitted under optional sections of POSIX, such as XSI or User Portability.

       In  cases  where  POSIX  and  Debian  Policy  disagree, checkbashisms by default allows extensions permitted by Policy but may also provide
       options for stricter checking.

OPTIONS

       --help, -h
              Show a summary of options.

       --newline, -n
              Check for "echo -n" usage (non POSIX but required by Debian Policy 10.4.)

       --posix, -p
              Check for issues which are non POSIX but required to be supported by Debian Policy 10.4 (implies -n).

       --force, -f
              Force each script to be checked, even if it would normally not be (for instance, it has a bash or non POSIX shell shebang or appears
              to be a shell wrapper).

       --extra, -x
              Highlight lines which, whilst they do not contain bashisms, may be useful in determining whether a particular issue is a false posi-
              tive which may be ignored.  For example, the use of "$BASH_ENV" may be preceded by checking whether "$BASH" is set.

       --version, -v
              Show version and copyright information.

EXIT VALUES

       The exit value will be 0 if no possible bashisms or other problems were detected.  Otherwise it will be the sum of the following error val-
       ues:

       1      A possible bashism was detected.

       2      A file was skipped for some reason, for example, because it was unreadable or not found.  The warning message will give details.

SEE ALSO

       lintian(1).

AUTHOR

       checkbashisms  was originally written as a shell script by Yann Dirson <dirson@debian.org> and rewritten in Perl with many more features by
       Julian Gilbey <jdg@debian.org>.

DEBIAN                                                           Debian Utilities                                                 CHECKBASHISMS(1)

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

while loop inside while loop

Discussion started by: panknil

2. Shell Programming and Scripting

Using variables created sequentially in a loop while still inside of the loop [bash]

Discussion started by: DeCoTwc

3. Shell Programming and Scripting

Is it possible to have a for loop inside another for loop?

Discussion started by: scottzx7rr

4. Shell Programming and Scripting

For Loop inside For loop

Discussion started by: nnani