Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Sorting the contents of a variable
Top Forums Shell Programming and Scripting Sorting the contents of a variable Post 303034988 by stomp on Friday 10th of May 2019 12:25:32 PM
Old 05-10-2019
Code:
echo "4 2 d c b 1 a b A b 1 B C a b c d" | ./clean.awk

# output
 a b c d 1 2 4

clean.awk
Code:
#!/usr/bin/awk -f
{
   for(i=1;i<=NF;i++)
      a[tolower($i)]=1
} 

END{ 
   for(i in a)
      printf i " "
   printf "\n"
}

awk seems to have a sorting algorithm when accessing lists.

...or in one line:

Code:
echo "4 2 d c b 1 a b A b 1 B C a b c d" | awk '{for(i=1;i<=NF;i++) {a[tolower($i)]=1}} END{for(i in a) {printf i " "} ; printf "\n"}'

 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

adding contents of a variable to a command

hi all, i'm new to shell scripting, so i'm not sure how to work this. Is it possible to read in the contents of a variable and add it to a command? for example: ------------------------ #!/bin/sh set example = -dfr rm ${example} ------------------------ when i run the script, i want... (2 Replies)
Discussion started by: gammarays
2 Replies

2. UNIX for Dummies Questions & Answers

Save contents of a Variable

I want to save the contents of a variable to a file. How can that be achieved? I have tried with: echo $varname > textfile.txt but for some reason it does not print anything. (1 Reply)
Discussion started by: carl_vieyra
1 Replies

3. Shell Programming and Scripting

unique sort contents of a variable

Hi , I have #echo $var1 #hdisk2 hdisk3 hdisk0 hdisk2 Now I need to remove duplicate entries from this . ie. after sorting it should only have hdisk2 hdisk3 hdisk0 . I can have these values in a array as well . I understand we can use sort -u to remove the duplicates in a... (2 Replies)
Discussion started by: praveenbvarrier
2 Replies

4. Shell Programming and Scripting

Storing the contents of a file in a variable

There is a file named file.txt whose contents are: +-----------------------------------+-----------+ | Variable_name | Value | +-----------------------------------+-----------+ | Aborted_clients | 0 | | Aborted_connects | 25683... (6 Replies)
Discussion started by: proactiveaditya
6 Replies

5. Shell Programming and Scripting

how to grep the contents of a variable..

Hello All, I've written a script to collect all audit logs files; now i want to see only the files from it which contains certain x tablenames. I've stored all the tablenames in a log file and using it through variable in a script (ex:below) $ more tablenames.log (this is just a samle... (2 Replies)
Discussion started by: suri.tyson
2 Replies

6. Shell Programming and Scripting

How to read contents of a file into variable :(

My file is in this format : username : student information : default shell : student ID Eg : joeb:Joe Bennett:/bin/csh:1234 jerryd:Jerry Daniels:/bin/csh:2345 deaverm: Deaver Michelle:/bin/bash:4356 joseyg:Josey Guerra:/bin/bash:8767 michaelh:Michael Hall:/bin/ksh:1547 I have to... (1 Reply)
Discussion started by: dude_me5
1 Replies

7. Homework & Coursework Questions

How to read contents of a file into variable :(

Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted! 1. The problem statement, all variables and given/known data: I have to read the contents of each field of a file creating user accounts. The file will be of format : ... (6 Replies)
Discussion started by: dude_me5
6 Replies

8. Shell Programming and Scripting

Providing variable contents to awk

Hello, All. This is my first post here, and I expect that the answer is simple, but I can't find it. Might be the way I'm searching. I'm fairly new to Unix/Linux, and I'm writing a Korn Shell Script. I am trying to provide a value that is already in a variable to awk so that awk can pull out the... (3 Replies)
Discussion started by: compguy74
3 Replies

9. Shell Programming and Scripting

Folder contents getting appended as strings while redirecting file contents to a variable

Hi one of the output of the command is as below # sed -n "/CCM-ResourceHealthCheck:/,/---------/{/CCM-ResourceHealthCheck:/d;/---------/d;p;}" Automation.OutputZ$zoneCounter | sed 's/$/<br>/' Resource List : <br> *************************** 1. row ***************************<br> ... (2 Replies)
Discussion started by: vivek d r
2 Replies

10. UNIX for Beginners Questions & Answers

Storing file contents to a variable

Hi All, I was trying a shell script. I was unable to store file contents to a variable in the script. I have tried the below but unable to do it. Input = `cat /path/op.diary` Input = $(<op.diary) I am using ksh shell. I want to store the 'op.diary' file contents to the variable 'Input'... (12 Replies)
Discussion started by: am24
12 Replies

LEARN ABOUT REDHAT

tzselect

TZSELECT(8)						      System Manager's Manual						       TZSELECT(8)

NAME

       tzselect - select a time zone

SYNOPSIS

       tzselect

DESCRIPTION

       The  tzselect program asks the user for information about the current location, and outputs the resulting time zone description to standard
       output.	The output is suitable as a value for the TZ environment variable.

       All interaction with the user is done via standard input and standard error.

ENVIRONMENT VARIABLES

       AWK    Name of a Posix-compliant awk program (default: awk).

       TZDIR  Name of the directory containing time zone data files (default: /usr/local/etc/zoneinfo).

FILES

       TZDIR/iso3166.tab
	      Table of ISO 3166 2-letter country codes and country names.

       TZDIR/zone.tab
	      Table of country codes, latitude and longitude, TZ values, and descriptive comments.

       TZDIR/TZ
	      Time zone data file for time zone TZ.

EXIT STATUS

       The exit status is zero if a time zone was successfully obtained from the user, nonzero otherwise.

SEE ALSO

       newctime(3), tzfile(5), zdump(8), zic(8)

																       TZSELECT(8)
All times are GMT -4. The time now is 02:17 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy