Shell Programming and Scripting

$ cat FILE1.TXT
2293847982374 sdj 23423
2298372038974 dsj 23492
2972837629376 abj 34929
2984836398384 abc 39723

$ cat ./add_trailer.ksh
#!/bin/ksh
MYFILE=FILE1.TXT
FILECOUNT=$(wc -l < $MYFILE 2>/dev/null)
typeset -Z6 TRAILER=${FILECOUNT:-0}
echo "3$TRAILER" >> $MYFILE
exit 0

$ ./add_trailer.ksh

$ cat FILE1.TXT
2293847982374 sdj 23423
2298372038974 dsj 23492
2972837629376 abj 34929
2984836398384 abc 39723
3000004

count_trlr=`grep "^3" $DATADIR/$FILE1.DAT| cut -c2-8`

 
eg:
contr_trlr=0023343, i want 23343
contr_trlr=1111111, i want 1111111
contr_trlr=0222222, i want only 222222

#!/bin/ksh

typeset -i count_trlr=$(grep "^3" $DATADIR/$FILE1.DAT| cut -c2-8)

$ contr_trlr=0023343
$ echo  $contr_trlr|tr -d '^0'
23343

$ contr_trlr=1111111
$ echo  $contr_trlr|tr -d '^0'
1111111

$ contr_trlr=0222222
$ echo  $contr_trlr|tr -d '^0'
222222