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Oops. Actually, the middle segment above should be:
REST="${REST%[[:space:]]}"
for event in $REST
do event="${event%[[:space:]]}"
[ ! "$event" ] && continue

Sorry, I missed a closing brace:
do [ ! "${event%[[:space:]]}" ] && continue

I'll correct it in my earlier post.

You can't get an exit code of -1 from a process run by the shell.

Your comments about the format of center.txt described in your comments and the format of center.txt implied by the comments in...

This may be what the requestor wants his bash script to do:CNum=76
IFS="," read X cname csname < <(grep "^${CNum}," file); echo $CNum,$cname,$csname
76,Winston Hills,WIN


EDIT: Or, if you...

@alister, it would improve somewhat upon the accepted solution, since expr is an external command, whereas printf is not, although both would be slower than your suggested variable expansion of...

printf is a poor approach. Post #3 states that the result of stripping the leading zeroes will be saved for further use. To save printf's output, it's necessary to use command substitution, which...

Like the shell built-in numerics, printf "%d" treats a value with a leading 0 as an octal value, so 08 and 09 give error.
A workaround is printf "%.f".

while read v junk
do
wardevent=$((10#$v))
echo $wardevent
done < file

Dear pamu,
How does your code react with the following input? :-0001
0002 123
0003 HelloI regret that I get syntax errors for lines 2 & 3.



Robin

also


while read line
do
wardevent=$(expr $line + 0) # remove leading Zero from the line
echo $wardevent
done<file

Did you peruse your shell's man page? This works with recent shells:while read line
do #echo $line
gendage=${line:9:3} #Loc 9th character in the line and select the next 3 Char
...

@krishmaths:
test wants = not ==
And the variable preset can happen once when placed just before the loop
yes="n"
until [ "$yes" = "y" ]

#!/bin/bash
# Put Values in an myarrayname and read them back
file="file.txt" # input filename

while read line ;do
wardevent=${line:3:2} # find the wardells...

You may need to loop it up until you get response as "y" like the following.


#!/bin/bash
# Put Values in an myarrayname and read them back
file="FILE.EXT" # input filename

yes="n"...

The arithmetic expansion of $(($x)) when $x expands to the string " 56" is 56.
Similarly, the parameter expansion of ${x##*[!1-9]} (which removes everything in the string before the 1st non-zero...

So, with you new statement of what you want, try:
#!/bin/bash
#set initial variables
file="FILE.EXT" # input filename

IFS='"' read -r x cn x centnam x < "$file"
cn=${cn##*[!1-9]} # strip...

awk -F "[^0-9]*" '{print $2,$3,$4}'
56
001 50 50
003 100 100

#!/bin/bash

file="FILE.EXT"

while read line
do
centnum=${line:2:3}
centnam=$(echo $line | cut -d '"' -f4)
echo "D;$(($centnum));$centnam;;M;;"
done < $file

gives
...