I am big on a Proof of Concept (POC) demonstration of alternative technologies, so I can get into technologies not in my original job description. Then, I have processional experience when I leave. Not a web developer? Put up some useful web services to help yourself and the group. Not a C/JAVA/PERL guy? Write some useful tools, reports, in your new language and share them around. Developers can get what they need free in the world of open source, or write a new whatever from scratch. It might be better than the original. I wrote uniq and comm in C before I discovered their names. My last uniq was better, a sort-free home-brew binary tree tool that also does aggregates:
I should add an argument to set the null string, currently hardwired for Interbase/firebird '<null>'. https://www.unix.com/shell-programmin...roup-unix.html
You can get certified in the various LINUX/UNIX/Language skills, and get hired with them as 'nice to have', an edge on the competition, in a less skill-intense area than development.
Last edited by DGPickett; 11-15-2012 at 05:36 PM..
hey,
i am a pretty good linux/unix user but i would like to discover the full capabilities of linux/unix. i have "unix unleashed , by sams" any other books/websites reccomendations. thanks (2 Replies)
I am new to program development on Linux.
I wonder what computer languages are easy to grasp to create man - machine interactive interface software, which can accept inputs (parameters) from usrers, and present (display) the calculation results to users.
Before, I have heared about Perl,... (10 Replies)
Not totally new to Linux. Have done distro installs before. At this point, I'm looking for a way out of the MS lock down I've been in. Looking for a good beginner/intermediate book. One that will cover things such as server installs as well as things like X-Windows/SAMBA installs from CLI. What I... (2 Replies)
I am new to unix world. I just know some basic commands only and some basics knowledge about unix. Anyone please suggest me from where should I start. Suggest me some book that could help me from the beginning. Presently I am working in php in a company and I want to move in unix. Please suggest me... (1 Reply)
I am begginer to perl scripting, i like to learn all the functionality of the perl scrpting , Could you please help me on this :confused::confused: (2 Replies)
In case you have not seen it, we have a UNIX and Linux Timeline on FB.
If you have a few free moments, could you review the timeline and post back here in this thread with your suggestions and ideas for new entries and milestones?
Thanks! (1 Reply)
Hi,
I'm a beginner and am learning c programming. I want to learn UNIX/LINUX in parallel. But I don't know difference between UNIX and LINUX and where they are applied in real life. As a beginner, some people asked me to start with UNIX. Please let me know some very good books for UNIX. Also a... (6 Replies)
Discussion started by: nerdbee
6 Replies
LEARN ABOUT X11R4
uniq
UNIQ(1) User Commands UNIQ(1)NAME
uniq - report or omit repeated lines
SYNOPSIS
uniq [OPTION]... [INPUT [OUTPUT]]
DESCRIPTION
Filter adjacent matching lines from INPUT (or standard input), writing to OUTPUT (or standard output).
With no options, matching lines are merged to the first occurrence.
Mandatory arguments to long options are mandatory for short options too.
-c, --count
prefix lines by the number of occurrences
-d, --repeated
only print duplicate lines, one for each group
-D print all duplicate lines
--all-repeated[=METHOD]
like -D, but allow separating groups with an empty line; METHOD={none(default),prepend,separate}
-f, --skip-fields=N
avoid comparing the first N fields
--group[=METHOD]
show all items, separating groups with an empty line; METHOD={separate(default),prepend,append,both}
-i, --ignore-case
ignore differences in case when comparing
-s, --skip-chars=N
avoid comparing the first N characters
-u, --unique
only print unique lines
-z, --zero-terminated
line delimiter is NUL, not newline
-w, --check-chars=N
compare no more than N characters in lines
--help display this help and exit
--version
output version information and exit
A field is a run of blanks (usually spaces and/or TABs), then non-blank characters. Fields are skipped before chars.
Note: 'uniq' does not detect repeated lines unless they are adjacent. You may want to sort the input first, or use 'sort -u' without
'uniq'. Also, comparisons honor the rules specified by 'LC_COLLATE'.
AUTHOR
Written by Richard M. Stallman and David MacKenzie.
REPORTING BUGS
GNU coreutils online help: <http://www.gnu.org/software/coreutils/>
Report uniq 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 comm(1), join(1), sort(1)
Full documentation at: <http://www.gnu.org/software/coreutils/uniq>
or available locally via: info '(coreutils) uniq invocation'
GNU coreutils 8.28 January 2018 UNIQ(1)