max[$1] - 'max' is an array indexed by the value of the FIRST field
!($1 in max) ? $2 - if '$1' is NOT already in array 'max', return the value of the SECOND field
: - otherwise
($2 > max[$1]) ? $2 : max[$1] if the value of the SECOND field is greater than what's already in array 'max' (index by '$1'), return the value of the SECOND field. If not, return the current value of array 'max[$1]'.
'max[$1] =' - whatever gets returned, store it array 'max' index by the FIRST field.
Lil' bit wordy, but I hope you get the gist of it.
Is there any way using the sort command to get something like a GROUP BY clause?
I'm trying to sort through race_event records and group them by those individuals that raced together in the same race on the same date at the same track, but i run into a problem when there were days when the track... (6 Replies)
Hi,
Need awk help to group and print lines to format the output as shown below
INPUT FORMAT
set echo on
set heading on
set spool on
/* SCHEMA1 */ CREATE TABLE T1;
/* SCHEMA1 */ CREATE TABLE T2;
/* SCHEMA1 */ CREATE TABLE T3;
/* SCHEMA1 */ CREATE TABLE T4;
/* SCHEMA1 */ CREATE TABLE T5;... (5 Replies)
I wrote script in bash which generates this report:
User1,admin,rep,User2,shell,path1,x1,r1
User2,admin,rep,User7,shell,path1,x1,r1
User3,admin,rep,User4,shell,path1,x1,r1
User4,admin,rep,User3,shell,path1,x1,r1
User5,admin,rep,User1,shell,path1,x1,r1
User6,admin,rep,User5,shell,path1,x1,r1... (6 Replies)
I've this file and need to sort the data in each group
File would look like this ...
cat file1.txt
Reason : ABC
12345-0023
32123-5400
32442-5333
Reason : DEF
42523-3453
23345-3311
Reason : HIJ
454553-0001
I would like to sort each group on the last 4 fileds and print them... (11 Replies)
Hello,
I have a file and i want to sort by third column and extract the three top lines of each group, it is determined by the second column (144, 89, 55, etc).
Could you please help me with the appropiate awk shell script
XLY-XLP 144 0.592772 XLY-XLE 144 0.798121 ... (3 Replies)
Hi everyone,
I've really searched for a solution to this and this is what I found so far:
I need to sort a command output (here represented as a "cat file" command) and from the second down to the second-last line based on the second row and then print ALL the output with the specified section... (7 Replies)
URGENT HELP IS NEEDED!!
I am looking to move matching lines (01 - 07) from File1 and 77 tab the matching string from File2, to File3.txt. I am almost done but
- Currently, script is not printing lines to File3.txt in order.
- Also the matching lines are not moving out of File1.txt
... (1 Reply)
Hi
I have a file as below
<field1> <field2> <field3> ... <field_num1> <field_num2>
Trying to sort based on difference of <field_num1> and <field_num2> in desceding order and print all fields.
I tried this and it doesn't sort on the difference field .. Appreciate your help.
cat... (9 Replies)
Discussion started by: newstart
9 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)