Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Checking the last line and deleting
Top Forums Shell Programming and Scripting Checking the last line and deleting Post 92595 by vino on Tuesday 13th of December 2005 01:26:54 AM
Old 12-13-2005
Code:
sh-2.05b$ cat 1.txt
1
2
3
4

sh-2.05b$ wc -l < 1.txt
      5
sh-2.05b$ vi 1.txt 2> /dev/null <<EOF
> G
> :g:^ *$:d
> :wq
> EOF
sh-2.05b$ cat 1.txt
1
2
3
4
sh-2.05b$ wc -l < 1.txt
      4
sh-2.05b$

Last edited by vino; 12-13-2005 at 02:35 AM.. Reason: minor mistake
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Checking for a file in file pattern before deleting it

Hi, I need a script where I have delete all the files of type abc*.* from the directory /lmn/opq (passed as parameter to script) But I need to check if there is file of type abc*.* existing in the directory or not before I use the rm abc*.* command. Thanks (1 Reply)
Discussion started by: dsrookie
1 Replies

2. UNIX for Advanced & Expert Users

Deleting First 10 letters in a line

Hi, Could any one of you let me know any simple Unix command for deleting first 10 letters of first line in unix? Eg: 123456789ABC --Input ABC--Output Thanks Sue (9 Replies)
Discussion started by: pyaranoid
9 Replies

3. Shell Programming and Scripting

Checking files size and deleting if bigger than x

Hello , I have to write a crontab line make a check on a file and, if bigger than 2Gb, to stop apache daemon, delete the file and restart apache . Someone have suggestions ? Thanks (2 Replies)
Discussion started by: gogol_bordello
2 Replies

4. Shell Programming and Scripting

Deleting Characters at specific position in a line if the line is certain length

I've got a file that would have lines similar to: 12345678 x.00 xx.00 x.00 xxx.00 xx.00 xx.00 xx.00 23456781 x.00 xx.00 xx.00 xx.00 xx.00 x.00 xxx.00 xx.00 xx.00 xx.00 34567812 x.00 xx.00 x.00 xxx.00 xx.00 xx.00 xx.00 45678123 x.00 xx.00 xx.00 xx.00 xx.00 x.00 xxx.00 xx.00 xx.00 xx.00 xx.00... (10 Replies)
Discussion started by: Cailet
10 Replies

5. UNIX for Dummies Questions & Answers

Deleting every other Line in VI

Hello, How would one delete every other two lines using VI? For example, I have the following 8 lines: Line1 Line2 Line3 Line4 Line5 Line6 Line7 Line8 And wish to only delete lines 3-4 and 7-8. Is there a certain pattern which would make this easier? Thank you, -Jahn (8 Replies)
Discussion started by: Jahn
8 Replies

6. Shell Programming and Scripting

Deleting new line characters

Hi, I have a weird requirement. I am having a file with 12fields in it and the end of the line for each record is "\n" (Just \n and no carriage returns) and the field delimiter is "|". Problem is I can have new line characters in any field in the data and these new line characters can even come... (11 Replies)
Discussion started by: ngkumar
11 Replies

7. UNIX for Dummies Questions & Answers

Deleting a pattern in UNIX without deleting the entire line

Hi I have a file: r58778.3|SOURCES={KEY=f665931a...,fw,221-705}|ERRORS={16_1:T,30_1:T,56_1:C,57_1:T,59_1:A,101_1:A,115:-,158_1:C,186_1:A,204:-,271_1:T,305:-,350_1:C,368_1:G,442_1:C,472_1:G,477_1:A}|SOURCE_1="Contig_1092402550638"(f665931a359e36cea0976db191ff60ff09cc816e) I want to retain... (15 Replies)
Discussion started by: Alyaa
15 Replies

8. Shell Programming and Scripting

Checking number of commas in each line.

Hi All, I am checking whether each line is having "n" number of commas or nor. In case not then I need to exit the process. I tried cat "$TEMP_FILE" | while read LINE do processing_line=`expr $processing_line + 1` no_of_delimiters=`echo "$LINE" | awk -F ',' '{ print NF }'` if ... (4 Replies)
Discussion started by: Anupam_Halder
4 Replies

9. Shell Programming and Scripting

Checking has for a command line argument

I would like to search and print a match of the user entered $ARGV. Im terrible with hashes and really dont know where to go from here. The example data file name location phone Bugs holeintheground 5551212 Woody holeinthetree 6661313 Jerry holeinthewall 7771414... (4 Replies)
Discussion started by: sumguy
4 Replies

10. Shell Programming and Scripting

Deleting double quoted string from a line when line number is variable

I need to remove double quoted strings from specific lines in a file. The specific line numbers are a variable. For example, line 5 of the file contains A B C "string" I want to remove "string". The following sed command works: sed '5 s/\"*\"//' $file If there are multiple... (2 Replies)
Discussion started by: rennatsb
2 Replies

LEARN ABOUT REDHAT

mac2unix

dos2unix(1)						      General Commands Manual						       dos2unix(1)

NAME

       dos2unix - DOS/MAC to UNIX text file format converter

SYNOPSYS

       dos2unix [options] [-c convmode] [-o file ...] [-n infile outfile ...]

       Options:

       [-hkqV] [--help] [--keepdate] [--quiet] [--version]

DESCRIPTION

       This manual page documents dos2unix, the program that converts plain text files in DOS/MAC format to UNIX format.

OPTIONS

       The following options are available:

       -h --help
	      Print online help.

       -k --keepdate
	      Keep the date stamp of output file same as input file.

       -q --quiet
	      Quiet mode. Suppress all warning and messages.

       -V --version
	      Prints version information.

       -c --convmode convmode
	      Sets conversion mode. Simulates dos2unix under SunOS.

       -o --oldfile file ...
	      Old file mode. Convert the file and write output to it. The program default to run in this mode. Wildcard names may be used.

       -n --newfile infile outfile ...
	      New  file  mode.	Convert the infile and write output to outfile. File names must be given in pairs and wildcard names should NOT be
	      used or you WILL lost your files.

EXAMPLES

       Get input from stdin and write output to stdout.

	      dos2unix

       Convert and replace a.txt. Convert and replace b.txt.

	      dos2unix a.txt b.txt

	      dos2unix -o a.txt b.txt

       Convert and replace a.txt in ASCII conversion mode.  Convert and replace b.txt in ISO conversion mode.  Convert	c.txt  from  Mac  to  Unix
       ascii format.

	      dos2unix a.txt -c iso b.txt

	      dos2unix -c ascii a.txt -c iso b.txt

	      dos2unix -c mac a.txt b.txt

       Convert and replace a.txt while keeping original date stamp.

	      dos2unix -k a.txt

	      dos2unix -k -o a.txt

       Convert a.txt and write to e.txt.

	      dos2unix -n a.txt e.txt

       Convert a.txt and write to e.txt, keep date stamp of e.txt same as a.txt.

	      dos2unix -k -n a.txt e.txt

       Convert and replace a.txt. Convert b.txt and write to e.txt.

	      dos2unix a.txt -n b.txt e.txt

	      dos2unix -o a.txt -n b.txt e.txt

       Convert c.txt and write to e.txt. Convert and replace a.txt.  Convert and replace b.txt. Convert d.txt and write to f.txt.

	      dos2unix -n c.txt e.txt -o a.txt b.txt -n d.txt f.txt

DIAGNOSTICS

BUGS

       The program does not work properly under MSDOS in stdio processing mode.  If you know why is that so, please tell me.

AUTHORS

       Benjamin Lin - <blin@socs.uts.edu.au>

       Bernd Johannes Wuebben (mac2unix mode) <wuebben@kde.org>

MISCELLANY

       Tested environment:

	      Linux 1.2.0 with GNU C 2.5.8

	      SunOS 4.1.3 with GNU C 2.6.3

	      MS-DOS 6.20 with Borland C++ 4.02

       Suggestions and bug reports are welcome.

SEE ALSO

       unix2dos(1) mac2unix(1)

1995.03.31							   dos2unix v3.0						       dos2unix(1)
All times are GMT -4. The time now is 05:57 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy