I am a rookie regarding shell script programming, YET!! :-)
Hence, I have choosen a problem from my bad side of life (my job) and I wil try to solve it by using a shell script and get knowledge concerning shell script programming.
Question: As you can see I have already figured out how to use a function, variables, different standard funtions (if, loops,etc). But I struggeld by using the printf function in order to add blanks to string. If the string which I pass into the function is longer than 40 digits then the printf function has to shorten string to 40 digits. This function works perfectly but if the string is shorter than 40 digits then the printf function has to add blanks until the string has a lenght of 40 digits but this part of my shell script doesn't work !!! The function adds only ONE blank
Code:
#!/bin/bash
fkt_auffuellen()
{
case $1 in
"C")
if [ ${#2} -eq $3 ]; then
value=$2
elif [ ${#2} -lt $3 ]; then
value="$(printf "%-$3s" $2)"
else
value="$(printf "%.$3s" $2)"
fi;;
"N")
;;
"D")
;;
esac
}
vorg_nr_t=C
vorg_nr="AUFTRAG005-010010"
vorg_nr_l=40
fkt_auffuellen $vorg_nr_t $vorg_nr $vorg_nr_l
echo $value
if anyone can give an advice it would be great!!!!
Thanks in advance and cold but sunny greetings form BERLIN Area!
Noobie1995
P.S.: I am so sorry for my english it has been a while..........
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LEARN ABOUT DEBIAN
printf
PRINTF(1) User Commands PRINTF(1)NAME
printf - format and print data
SYNOPSIS
printf FORMAT [ARGUMENT]...
printf OPTION
DESCRIPTION
Print ARGUMENT(s) according to FORMAT, or execute according to OPTION:
--help display this help and exit
--version
output version information and exit
FORMAT controls the output as in C printf. Interpreted sequences are:
" double quote
\ backslash
a alert (BEL)
backspace
c produce no further output
e escape
f form feed
new line
carriage return
horizontal tab
v vertical tab
NNN byte with octal value NNN (1 to 3 digits)
xHH byte with hexadecimal value HH (1 to 2 digits)
uHHHH Unicode (ISO/IEC 10646) character with hex value HHHH (4 digits)
UHHHHHHHH
Unicode character with hex value HHHHHHHH (8 digits)
%% a single %
%b ARGUMENT as a string with `' escapes interpreted, except that octal escapes are of the form or NNN
and all C format specifications ending with one of diouxXfeEgGcs, with ARGUMENTs converted to proper type first. Variable widths are han-
dled.
NOTE: your shell may have its own version of printf, which usually supersedes the version described here. Please refer to your shell's
documentation for details about the options it supports.
AUTHOR
Written by David MacKenzie.
REPORTING BUGS
Report printf bugs to bug-coreutils@gnu.org
GNU coreutils home page: <http://www.gnu.org/software/coreutils/>
General help using GNU software: <http://www.gnu.org/gethelp/>
Report printf translation bugs to <http://translationproject.org/team/>
COPYRIGHT
Copyright (C) 2011 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.
SEE ALSO printf(3)
The full documentation for printf is maintained as a Texinfo manual. If the info and printf programs are properly installed at your site,
the command
info coreutils 'printf invocation'
should give you access to the complete manual.
GNU coreutils 8.12.197-032bb September 2011 PRINTF(1)
03-02-2013
ERP - MES Interface - several function
!!! The function adds only ONE blank