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Setting a variable in a while loop (.ksh script)

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Top Forums Shell Programming and Scripting Setting a variable in a while loop (.ksh script)
# 8  
Old 07-08-2011
Funksen,

My goal is not the content of Uproc but the content on the same line. Uproc is an identifier (unique of course).

This is the test content of the file to be read :
Code:
uproc1&uproc1_rep_source&rep_source1|rep_source2|rep_source3
uproc2&uproc2_rep_source&rep_source1|rep_source2|rep_source3

---------- Post updated at 11:36 AM ---------- Previous update was at 11:33 AM ----------

@Itkamaraj :

Here is the output (null value):
Code:
+ file=/home/jpassema/purge_/appli
+ rep_cible=
+ IFS=&
+ cat /home/jpassema/purge_/appli
+ read UPROC REP_CIBLE LIST_REP_SOURCE
+ [ uproc1 = uproc1 ]
+ echo repertoire cible =
repertoire cible =
+ let  rep_cible=uproc1_rep_source
+ let  liste_rep_sources=rep_source1|rep_source2|rep_source3
+ read UPROC REP_CIBLE LIST_REP_SOURCE
+ [ uproc2 = uproc1 ]
+ read UPROC REP_CIBLE LIST_REP_SOURCE
+ echo repertoire cible =
repertoire cible =

---------- Post updated at 11:38 AM ---------- Previous update was at 11:36 AM ----------

However when i try to insert an echo at the end of the "if" statement, here is the output:
Code:
+ file=/home/jpassema/purge_/appli
+ rep_cible=
+ IFS=&
+ cat /home/jpassema/purge_/appli
+ read UPROC REP_CIBLE LIST_REP_SOURCE
+ [ uproc1 = uproc1 ]
+ echo repertoire cible =
repertoire cible =
+ let  rep_cible=uproc1_rep_source
+ let  liste_rep_sources=rep_source1|rep_source2|rep_source3
+ echo repertoire cible = 0
repertoire cible = 0
+ read UPROC REP_CIBLE LIST_REP_SOURCE
+ [ uproc2 = uproc1 ]
+ read UPROC REP_CIBLE LIST_REP_SOURCE
+ echo repertoire cible =
repertoire cible =


"repertoire cible" should contain a string, not an integer
Last edited by Franklin52; 07-08-2011 at 02:09 PM.. Reason: Please use code tags for data and code samples
# 9  
Old 07-08-2011
then the problem is reading from the file.

what is your file contents ? ( post some lines )

wherever you compare the values ( do some echo for testing and make sure it gets and got the correct data )

also echo this value $uproc_cible
# 10  
Old 07-08-2011
I have added echos to test the values of uproc_cible (the script input), and UPROC, the line read. Those echos echo the proper values (output below)
Code:
+ uproc_cible=uproc1
+ [ ! -f /home/jpassema/purge_/appli ]
+ [ ! -f /home/jpassema/purge_/uproc ]
+ file=/home/jpassema/purge_/appli
+ echo uproc1
uproc1
+ rep_cible=
+ IFS=&
+ cat /home/jpassema/purge_/appli
+ read UPROC REP_CIBLE LIST_REP_SOURCE
+ echo premiere ligne = uproc1
premiere ligne = uproc1
+ [ uproc1 = uproc1 ]
+ echo repertoire cible =
repertoire cible =
+ let  rep_cible=uproc1_rep_source
+ let  liste_rep_sources=rep_source1|rep_source2|rep_source3
+ echo repertoire cible = 0
repertoire cible = 0
+ read UPROC REP_CIBLE LIST_REP_SOURCE
+ echo premiere ligne = uproc2
premiere ligne = uproc2
+ [ uproc2 = uproc1 ]
+ read UPROC REP_CIBLE LIST_REP_SOURCE
+ echo repertoire cible =
repertoire cible =

---------- Post updated at 02:28 PM ---------- Previous update was at 02:18 PM ----------

and here is the format of my conf file :
Code:
uproc1&uproc1_rep_source&rep_source1|rep_source2|rep_source3

the 3 columns are

1: uproc1 2: uproc1_rep_source
3: rep_source1|rep_source2|rep_source3
Last edited by Franklin52; 07-08-2011 at 02:10 PM.. Reason: Code tags
# 11  
Old 07-08-2011
Using pipe read and set variable globally works only in ksh and zsh.
Code:
grep "^$uproc_cible&" $file | IFS="&" read  uproc rep_cible liste_rep_sources
echo "uproc:$uproc"
echo "rep_cible:$rep_cible"

Generic sh version, works in all about posix sh like ksh, dash, bash, ...
Code:
IFS="&" read  uproc rep_cible liste_rep_sources <<EOF
$(grep "^$uproc_cible&" $file )
EOF
echo "uproc:$uproc"
echo "rep_cible:$rep_cible"

This User Gave Thanks to kshji For This Post:
Corona688
# 12  
Old 07-11-2011
Hi kshji,

Thanks for the suggestion. It still doesn't work, which tells me that the issue is probably the file in itself or something of that sort.Could it come from the format of the file or perhaps from my bash version : "GNU bash, version 3.2.25(1)-release (x86_64-redhat-linux-gnu)"
# 13  
Old 07-11-2011
Try this:
Code:
file="/home/jpassema/purge_/appli"

while IFS="&" read UPROC REP_CIBLE LIST_REP_SOURCE
do
  if [ "$UPROC" = "$uproc_cible" ]; then
    rep_cible=$REP_CIBLE
    liste_rep_sources=$LIST_REP_SOURCE
  fi
done < $file

echo "repertoire cible = $rep_cible"

# 14  
Old 07-11-2011
Thanks a lot Franklin52,

It seems i was not able to properly read the file. Your code works just fine.
Thanks again!!
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