Thanks Franklin52.
Unfortunately, I am getting :- syntax error near line 1
bailing out near line 1
I created a script containing your code as follows :-
awk 'NF && !a[$1]++{NF=NF+1;print}' OFS="|" myfile
where myfile is the sorted output from the 'last' command.
Am I meant to set NF to a new file name ?
Or set [$1] to a runtime parameter ?
If so, what value ?
Sorry if any of this is obvious, but I am not an expert.
Thanks again for your help.
---------- Post updated at 12:41 PM ---------- Previous update was at 09:23 AM ----------
Hi All,
I am running my application on a dual cpu debian linux 3.0 (2.4.19 kernel).
For my application:
<sar -U ALL>
CPU %user %nice %system %idle
...
10:58:04 0 153.10 0.00 38.76 0.00
10:58:04 1 3.88 0.00 4.26 ... (0 Replies)
Hi All,
I have working (Perl) code to combine 2 input files into a single output file using the join function that works to a point, but has the following limitations:
1. I am restrained to 2 input files only.
2. Only the "matched" fields are written out to the "matched" output file and... (1 Reply)
Hi,
I have written a BASH shell script that contains a lot of "echo" commands to notify the user about what's going on. The script generates a log file that contains a copy of what is seen in the terminal. The echo statements are generally verbose, and thus extend out for quite a ways on one... (2 Replies)
Can someone help me to convert the date format after get it from the "LAST REBOOT" command.
these is the standard output.
bash-3.00# last reboot
reboot system boot Fri Aug 6 15:07
reboot system down Fri Aug 6 15:04
reboot system boot ... (3 Replies)
Hello Team ,
I have to extract date section from the below file output. The output of the file is as shown below.
I have to extract the "" this section from the above output of the file. can anyone please let me know how can we acheive this? (4 Replies)
Hi,
I have line in input file as below:
3G_CENTRAL;INDONESIA_(M)_TELKOMSEL;SPECIAL_WORLD_GRP_7_FA_2_TELKOMSEL
My expected output for line in the file must be :
"1-Radon1-cMOC_deg"|"LDIndex"|"3G_CENTRAL|INDONESIA_(M)_TELKOMSEL"|LAST|"SPECIAL_WORLD_GRP_7_FA_2_TELKOMSEL"
Can someone... (7 Replies)
Hi All,
I tried searching a lot about this but to no avail. I have a HTML file. I used
links -dump file_page.html > text_html.txt
What the above command gave me was a filtered text from the HTML file with tags removed. Now, the the output from the above command looked something like this:... (1 Reply)
How to use "mailx" command to do e-mail reading the input file containing email address, where column 1 has name and column 2 containing “To” e-mail address
and column 3 contains “cc” e-mail address to include with same email.
Sample input file, email.txt
Below is an sample code where... (2 Replies)
Greetings!
After block level migration using an external appliance, the luns are getting reported as DGC-RAID5 and these luns are infact from the new storage. I have a query on changing the device Vendor info from DGC-RAID5 to HP3par in the format o/p only.
AVAILABLE DISK SELECTIONS:
... (3 Replies)
Discussion started by: n_Bhaskar
3 Replies
LEARN ABOUT PHP
truncate
TRUNCATE(1) User Commands TRUNCATE(1)NAME
truncate - shrink or extend the size of a file to the specified size
SYNOPSIS
truncate OPTION... FILE...
DESCRIPTION
Shrink or extend the size of each FILE to the specified size
A FILE argument that does not exist is created.
If a FILE is larger than the specified size, the extra data is lost. If a FILE is shorter, it is extended and the extended part (hole)
reads as zero bytes.
Mandatory arguments to long options are mandatory for short options too.
-c, --no-create
do not create any files
-o, --io-blocks
treat SIZE as number of IO blocks instead of bytes
-r, --reference=RFILE
base size on RFILE
-s, --size=SIZE
set or adjust the file size by SIZE bytes
--help display this help and exit
--version
output version information and exit
The SIZE argument is an integer and optional unit (example: 10K is 10*1024). Units are K,M,G,T,P,E,Z,Y (powers of 1024) or KB,MB,... (pow-
ers of 1000).
SIZE may also be prefixed by one of the following modifying characters: '+' extend by, '-' reduce by, '<' at most, '>' at least, '/' round
down to multiple of, '%' round up to multiple of.
AUTHOR
Written by Padraig Brady.
REPORTING BUGS
GNU coreutils online help: <http://www.gnu.org/software/coreutils/>
Report truncate translation bugs to <http://translationproject.org/team/>
COPYRIGHT
Copyright (C) 2017 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 dd(1), truncate(2), ftruncate(2)
Full documentation at: <http://www.gnu.org/software/coreutils/truncate>
or available locally via: info '(coreutils) truncate invocation'
GNU coreutils 8.28 January 2018 TRUNCATE(1)