We use a UNIX-based system (Lawson) at work and I was given this command to request a data extract from the db admin. The only thing I really understand is the last line as it appears to be joining the files created from the first three lines into one. Is there anyone who can help me breakdown the... (4 Replies)
# sub: find block (in cols), return line-numbers (begin-end) or 0 if notfound
sub findb{
my ($exp1,$col1,$exp2,$col2)= @_; # $exp = expression to find, $col - column to search in
my $cnt=0;
my ($val1,$val2);
my ($beg,$end);
for($cnt=1;$cnt<=65536;$cnt++){
$val1 =... (3 Replies)
i am analyzing a query written by another developer ,need to understand part of script
am looking at a code ..and it converts comma files to pipe delimited and also takes away quotes from any columns,
source field format: 2510,"Debbie",NewYork
changes to
target: 2510|Debbie|NewYork
... (1 Reply)
Can someone explain what is happening line by line in this script, particularly after the do statement. The script works, it renames all the files in my directory that has a date in the file name. But I would like to know more about it.
#!/bin/bash
newdate=12-10-1995
for file in *--*
do
... (6 Replies)
i am trying to understand this script example. the text does not explain it. can someone tell me briefly what each of the functions do. any help will be appreciated.
#!/bin/bash
killtree() {
local _pid=$1
local _sig=${2-TERM}
for _child in $(ps -o pid --no-headers --ppid... (1 Reply)
Hi Guys,
I am new to scripting , I am trying to rebuild a script based on an old script. Can someone help me figure out what the script is doing? This is only a part of the script.
I am looking to interpret these two points in the scripts:-
1)
test=`echo $?`
while
I do not... (3 Replies)
Hi,
New to this forum, as well as to unix scripting..need help to understand below script ...
sendNotice_sp()
{
ATTACH=${LNXLOG:-}
if ; then
if ; then
mail -s "$ERR_MSG" $ERR_EMAIL_TO < $ATTACH
fi
else
mail -s "$ERR_MSG" $ERR_EMAIL_TO < /dev/null
fi
}
afaik this is sm kind of... (6 Replies)
Below script is called as Reducer, I am not sure how it work, can some expert explain me what this script does as i am a beginner.
inputfile:
hi hi how are are you
code:
#!/bin/bash
lastkey=""; -- what does this mean, because i saw in debug mode it is taking value as hi
count=0;... (13 Replies)
Hello,
How come the following script adds each numeric value to a total sum ?
x=$1
func()
{
for i in $1 $2 $3; do
let x= $x+$i
done }
func "8 8 8" 9 9
echo $x
A.How the program sums the string "8 8 8" if it`s only the first field value ($1)?
B.If we define x to be $1... (3 Replies)
Discussion started by: uniran
3 Replies
LEARN ABOUT CENTOS
grub-render-label
GRUB-RENDER-LABEL(1) User Commands GRUB-RENDER-LABEL(1)NAME
grub-render-label - generate a .disk_label for Apple Macs.
SYNOPSIS
grub-render-label [OPTION...] [OPTIONS]
DESCRIPTION
Render Apple .disk_label.
-b, --bgcolor=COLOR
use COLOR for background
-c, --color=COLOR
use COLOR for text
-f, --font=FILE
use FILE as font (PF2).
-i, --input=FILE
read text from FILE.
-o, --output=FILE
set output filename. Default is STDOUT
-t, --text=STRING
set the label to render
-v, --verbose
print verbose messages.
-?, --help
give this help list
--usage
give a short usage message
-V, --version
print program version
Mandatory or optional arguments to long options are also mandatory or optional for any corresponding short options.
REPORTING BUGS
Report bugs to <bug-grub@gnu.org>.
SEE ALSO
The full documentation for grub-render-label is maintained as a Texinfo manual. If the info and grub-render-label programs are properly
installed at your site, the command
info grub-render-label
should give you access to the complete manual.
grub-render-label (GRUB) 2.02-2ubuntu8.3 July 2018 GRUB-RENDER-LABEL(1)