Checking the last line and deleting Post: 92660

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

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

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

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...

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

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...

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...

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 ...

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...

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...

LEARN ABOUT LINUX

chsh

CHSH(1) 							   User Commands							   CHSH(1)

NAME

       chsh - change login shell

SYNOPSIS

       chsh [options] [LOGIN]

DESCRIPTION

       The chsh command changes the user login shell. This determines the name of the user's initial login command. A normal user may only change
       the login shell for her own account; the superuser may change the login shell for any account.

OPTIONS

       The options which apply to the chsh command are:

       -h, --help
	   Display help message and exit.

       -s, --shell SHELL
	   The name of the user's new login shell. Setting this field to blank causes the system to select the default login shell.

       If the -s option is not selected, chsh operates in an interactive fashion, prompting the user with the current login shell. Enter the new
       value to change the shell, or leave the line blank to use the current one. The current shell is displayed between a pair of [ ] marks.

NOTE

       The only restriction placed on the login shell is that the command name must be listed in /etc/shells, unless the invoker is the superuser,
       and then any value may be added. An account with a restricted login shell may not change her login shell. For this reason, placing /bin/rsh
       in /etc/shells is discouraged since accidentally changing to a restricted shell would prevent the user from ever changing her login shell
       back to its original value.

FILES

       /etc/passwd
	   User account information.

       /etc/shells
	   List of valid login shells.

       /etc/login.defs
	   Shadow password suite configuration.

SEE ALSO

       chfn(1), login.defs(5), passwd(5).

User Commands							    06/24/2011								   CHSH(1)

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Checking for a file in file pattern before deleting it

Discussion started by: dsrookie

2. UNIX for Advanced & Expert Users

Deleting First 10 letters in a line

Discussion started by: pyaranoid

3. Shell Programming and Scripting

Checking files size and deleting if bigger than x

Discussion started by: gogol_bordello

4. Shell Programming and Scripting

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

Discussion started by: Cailet