Help! Yet another check element in array Question


 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Help! Yet another check element in array Question
# 1  
Old 07-28-2010
Help! Yet another check element in array Question

Greetings,

DISCLAIMER: My shell scripting is rusty so my question may be borderline stupid. You've been warned.

I need to create a script that a) lists the content of zip files in a directory and b) sends out an `exception` report. My ZIP files contain a control file (for load check). I want to abort the whole process if the control file is missing from the ZIP file.

Typically a zip file will have its contents looking like this:

Code:
file_1231232345.ctl
filea.txt
fileb.txt
filec.txt

Here what I wrote so far:
Code:
#!/bin/bash

#get today's date in YYYYMMDD formart 
DAY=`date +%Y%m%d`

#populate array of HDD zipped log(s) for today 
HDD_ZIP_Array=(`ls *${DAY}*.zip`)
HDD_ZIPlen=${#HDD_ZIP_Array[*]}

#echoes message if no files to process and exits. 
if [ $HDD_ZIPlen -eq 0 ]
then
        echo " HDD CheckZip -- $HDD_ZIPlen files! Process will exit!" ;         exit 1;
else
        for name in ${HDD_ZIP_Array[@]};
                 do
                echo " Zip File Name: $name"
                #list ZIP contents with unzip, remove header and trailer, 
                 #reverse sort to put control file name at index 0 and put file names in array().
                HDD_LIST_Array=(`unzip -l $name | head -n -2|tail -n +4 | sort -r | awk '{print $4}'`)
                HDD_LISTlen=${#HDD_LIST_Array[*]}
                #iterate array to 1) build exception report and 2) look for control file
                echo -e "Files in ZIP file: $name\n"     >> report.out
                        for (( i = 0 ; i < ${#HDD_LIST_Array[@]} ; i++ ))
                                do
                                        echo -e "${HDD_LIST_Array[$i]}"  >> report.out
                                done
                echo -e "\n  Number of files in ZIP file: $HDD_LISTlen."  >> report.out
              #since the name of the control contains a random number, glob CTL extension
               if [ $i != {*ctl} ]
              then
                   echo "Control file not found!" ; exit 2;
                fi
                done
fi

It is basic but it works. Except the bottom part where I test for the CTL file extension. It is not working whether the file is here or not.

What am missing?

Thanks for your input.

Last edited by alan; 07-28-2010 at 08:28 PM.. Reason: Please don't use font SIZE=1!!
# 2  
Old 07-29-2010
You could try
Code:
if [[ $i != *.ctl ]]

In bash it seems if you use double square brackets, that the wildcard is working. Single sq. brackets do not work - I guess test is a bit limited to the shell built-in:

Code:
$> VAR=12345.ctl
$> [ $VAR == *.ctl ] && echo found
$> [[ $VAR == *.ctl ]] && echo found
found



---------- Post updated at 09:18 AM ---------- Previous update was at 09:10 AM ----------

Oh and I didn't notice at first:

Checking $i will not help since it is just a counter for your array and will contain only a number, if I am correct.

Better check something like ${HDD_LIST_Array[$i]}
This User Gave Thanks to zaxxon For This Post:
# 3  
Old 07-29-2010
Quote:
Originally Posted by zaxxon
You could try
Code:
if [[ $i != *.ctl ]]

In bash it seems if you use double square brackets, that the wildcard is working. Single sq. brackets do not work - I guess test is a bit limited to the shell built-in:

Code:
$> VAR=12345.ctl
$> [ $VAR == *.ctl ] && echo found
$> [[ $VAR == *.ctl ]] && echo found
found



---------- Post updated at 09:18 AM ---------- Previous update was at 09:10 AM ----------

Oh and I didn't notice at first:

Checking $i will not help since it is just a counter for your array and will contain only a number, if I am correct.

Better check something like ${HDD_LIST_Array[$i]}
Thanks for your reply.

I realized I needed to compare the element of the array instead of some value...which is what I was doing.

I tried this:

Code:
i=`echo ${HDD_LIST_Array[0]} | awk -F . '{print $NF}'`
if [ "$i" != "ctl" ]
  then
    echo "Control file not found!" ; exit 2;
fi

It worked.

Al.
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Awk: check element in array and it's value

Hello, I want to see if element exists in array, if so then, check it's corresponding value. Column 4 is position and column 1 is the chromosome for it. There are duplicates for one position on one chromosome. I want to check if same position exists on different chromosome: Data... (8 Replies)
Discussion started by: genome
8 Replies

2. UNIX for Advanced & Expert Users

Array Element

This question is for someone that's more familiar with Array Element. I need to know if the maximum array element that can be assigned is 1024 and if its so, Is there a workaround solution when the counter exceeded 1024? param_array="$param_nam" counter=$counter+1 #to avoid space... (3 Replies)
Discussion started by: cumeh1624
3 Replies

3. Shell Programming and Scripting

How to insert an array element within regex?

Hello to all, I'm trying to separate the string "str" using a regex within match function. The substrings that I want to separate, begin with 22, 23, 24 or 25 and followed by 12 or 14 characters. And I want to replace 22 with MJS, 23 with UYT, 24 with WER and 25 with PIL. For this string... (4 Replies)
Discussion started by: Ophiuchus
4 Replies

4. Shell Programming and Scripting

Perl: How to check whether my array contains element x

Hi All, I am new to perl I am stuck in simple problem I need your help I want to define a subroutine. sub check_if_entity_exists(@array_to_be_checked,$entityName) I have array as http-listener-1 http-listener-2 http-listener-3 http-listener-4 If i send http-listener-3 my... (1 Reply)
Discussion started by: javaholics
1 Replies

5. Shell Programming and Scripting

Multiplying array element

I am trying to take all the elements of an array and multiply them by 2, and then copy them to a new array. Here is what I have i=0 for true in DMGLIST do let DMGSIZES2="${DMGSIZES}"*2 let i++ done unset i echo ${DMGSIZES2} It does the calculation correctly for the first element,... (7 Replies)
Discussion started by: nextyoyoma
7 Replies

6. Shell Programming and Scripting

remove an element from array

I need to remove an element from the below array variable TABLENAME. #!/bin/ksh set -A TABLENAME "mirf roxar keke mirs" echo "the array is ${TABLENAME}" If i need to remove say keke and have the final TABLENAME as below, how this could be achieved. Pls throw some light. echo "Modified... (3 Replies)
Discussion started by: michaelrozar17
3 Replies

7. Shell Programming and Scripting

How to check index of a array element in shell script?

Example - Script to find the index of a month from array MONTHS="Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec" set -A MON $MONTHS A="Sun May 23 09:34:30 GMT 2010" getMonth=`echo $A|cut -c5-7` ##getMonth=May Arrayindex_in_MONTHS_array= ???? # { 0,1,2,3,4 } - at fifth place ... (7 Replies)
Discussion started by: KuldeepSinghTCS
7 Replies

8. Shell Programming and Scripting

Shift array element

I want to delete and 0th element of array in shell scrpit and also shift all others to one level up. (2 Replies)
Discussion started by: darshakraut
2 Replies

9. Shell Programming and Scripting

A final question! Compare character with each array element

qwrtyuiop666yhh (1 Reply)
Discussion started by: rorey_breaker
1 Replies

10. Shell Programming and Scripting

accessing my first element of array

Hello everyonel, I have an array set like so num=4 read name arr=name I go through while loop to assign different values to different array element from 1 to 4. when I try to access the FIRST element of the array I get the last one first. Like if I say ${arr} it will show the last element... (4 Replies)
Discussion started by: afadaghi
4 Replies
Login or Register to Ask a Question