Issue with tr, removing [:alnum:] Post: 302510299

Sponsored Content

Homework and Emergencies Homework & Coursework Questions Issue with tr, removing [:alnum:] Post 302510299 by alindner on Saturday 2nd of April 2011 10:44:15 PM

04-02-2011

Registered User

Issue with tr, removing [:alnum:]

Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!

Code:

1. The problem statement, all variables and given/known data:
 You 	should also know how to find files based on their characteristics.
Use 		stat to list the meta data for the file with inode number 2793324. 		Your command should suppress error messages. Hint: command 		substitution will make this easier!
 	alindner@cs215:~$ 	find / -inum 2793324 -exec stat {} \; 2> /dev/null
 	 	 File: `/usr/lib/locale/bn_IN/LC_NAME'
 	 	 Size: 130             Blocks: 8          IO Block: 	4096   regular file
 	Device: 	801h/2049d      Inode: 2793324     Links: 1
 	Access: 	(0644/-rw-r--r--)  Uid: (    0/    root)   Gid: (    0/    root)
 	Access: 	2011-04-02 19:37:31.000000000 -0400
 	Modify: 	2010-10-28 17:51:33.000000000 -0400
 	Change: 	2011-01-16 18:08:54.000000000 -0500
 	How 		many bytes would be in this file if all the 		alphas (a-z and A-Z) and all the numerics (0-9) where 		removed from it?
 
 2. Relevant commands, code, scripts, algorithms:
See 1 & 2

3. The attempts at a solution (include all code and scripts):
So i am trying to remove the Alpha and Numeric characters, so i am using tr to do this, but it keep dumping characters on my screen? when i try to do this.  Is this because when i less it it tells me its a binary file?

tr -d "[:alnum:]" < LC_NAME4

Also wasnt sure if it was an issue with permissions as well so i made copies of the file to work on and changed permissions (chmod 7777 LC_NAME4)

less LC_NAME4


^]^Q^C ^G^@^@^@$^@^@^@/^@^@^@0^@^@^@=^@^@^@S^@^@^@f^@^@^@|^@^@^@%p%t%f%t%g^@^@শ�<8D>র�<80>^@শ�<8D>র�<80>মত�<80>^@�<95>�<81>মার�<80>^@শ�<8D>র�<80>মত�<80>^@UTF-8^@
LC_NAME4 lines 1-1/1 (END)

Is there something im doing worn with tr?

4. Complete Name of School (University), City (State), Country, Name of Professor, and Course Number (Link to Course):
KeeneState, KSC, Keene, NH, USA, Charlie W., CS215-01

Note:  Without school/professor/course information, you will be banned if you post here! You must complete the entire template (not just parts of it).

---------- Post updated at 10:44 PM ---------- Previous update was at 09:04 PM ----------

Looking tr it looks more like it for replacing? So would i be able use sed with the d option?

alindner

View Public Profile for alindner

Find all posts by alindner

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Removing files

I have AIX 5.1 I was wondering how to remove a file name with a space in it Say {tb lsv.csv} ? When I use the {rm} command if you have a space it thinks it is a new file. So it looks for {tb} and {lsv.csv} instead of the name as a whole. Thanks in advance Dave By the way guys and gals the...

2. Shell Programming and Scripting

Unix Arithmatic operation issue , datatype issue

Hi, I have a shell scripting. This will take 7 digit number in each line and add 7 digit number with next subsequent lines ( normal addition ). Eg: 0000001 0000220 0001235 0000022 0000023 ........... ......... ........ Like this i am having around 1500000 records. After adding...

3. UNIX for Advanced & Expert Users

Issue with Removing Carriage Return (^M) in delimited file

Hi - I tried to remove ^M in a delimited file using "tr -d "\r" and "sed 's/^M//g'", but it does not work quite well. While the ^M is removed, the format of the record is still cut in half, like a,b, c c,d,e The delimited file is generated using sh script by outputing a SQL query result to...

4. Shell Programming and Scripting

Vi - removing last word

Hi All, I want to remove last word from a line using Vi. Do we have any vi command for that. line : ss dd ff gg i have to run some vi command which can delete gg from the line Thanks, Ravi Sadani

5. UNIX for Dummies Questions & Answers

ISSUE and ISSUE.NET files

In LINUX(CentOS, RedHat) is there a way to have the banner statement appear before the logon instead of after the logon? In UNIX and Windows the banner appears before a person actually logs on, what I'm seeing in LINUX is that it appears after the login(ftp, telnet, SSH). Thanks

6. Shell Programming and Scripting

Removing whitespace issue

Hi, I have a file with rows like below delimited with pipe (|) I want to remove all the leading and trailing white space from each and every fields keeping the delimiter intact. I have tired this sed 's/*//g;s/*$//g' but the result is incorrect it is removing a whitespace from...

7. Shell Programming and Scripting

Need assistance with a file issue and a terminal issue

Hello everyone, I'm in need of some assistance. I'm currently enrolled in an introductory UNIX shell programming course and, well halfway through the semester, we are receiving our first actual assignment. I've somewhat realized now that I've fallen behind, and I'm working to get caught up, but for...

8. Shell Programming and Scripting

Removing Numbers

Hi, Below is a scattered representation of numbers . 1 2 11 22 11 22 1 2 1 2 11 22 1 2 11 22 I need to display only the following sequence "" and delete of the remainder from the output. The output should look like

9. Shell Programming and Scripting

Variable value substitution issue with awk command issue

Hi All, I am using the below script which has awk command, but it is not returing the expected result. can some pls help me to correct the command. The below script sample.ksh should give the result if the value of last 4 digits in the variable NM matches with the variable value DAT. The...

10. UNIX for Dummies Questions & Answers

Removing PATTERN from txt without removing lines and general text formatting

Hi Everybody! First post! Totally noobie. I'm using the terminal to read a poorly formatted book. The text file contains, in the middle of paragraphs, hyphenation to split words that are supposed to be on multiple pages. It looks ve -- ry much like this. I was hoping to use grep -v " -- "...

LEARN ABOUT PLAN9

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)

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Removing files

Discussion started by: rocker40

2. Shell Programming and Scripting

Unix Arithmatic operation issue , datatype issue

Discussion started by: thambi

3. UNIX for Advanced & Expert Users

Issue with Removing Carriage Return (^M) in delimited file

Discussion started by: sirahc

4. Shell Programming and Scripting

Vi - removing last word

Discussion started by: ravi.sadani19