Sponsored Content
Top Forums Shell Programming and Scripting ksh string replacement over a carriage return Post 302873423 by Big_Jeffrey on Tuesday 12th of November 2013 05:47:41 AM
Old 11-12-2013
ksh string replacement over a carriage return

Hi.

I need to make multiple string replacements in a file but several of the strings have been broken up by a carriage return so that the first few characters are on one line and the remainder on the following line.

E.g like the word 'post' in the following:

Use descriptive thread titles when posting. For example, do not po
st questions with subjects like "Help Me!", "Urgent!!" or "Doubt". Po
st subjects like "Execution Problems with Cron"


I'm using a korn shell script with embedded perl. Should run on both linux and solaris. I tried the following:

#rm all carriage returns
Code:
perl  -0777 -nle 's/\n\s*( )/==$1/g; s/\n//g; s/==()/\n$1/g;  print "$_\n"' input.file > tmpfile

#replace the string
Code:
sed "s|string1|string2|g" tmpfile > input.file

#add carriage returns every 80 characters
Code:
perl -pi  -e's/^(.{79,79})(.*)/$1\n $2/' input.file

Seems to replace the string ok. However the format of the new output file is a bit messed up still when i try to put it back together again. Blank line are not handled for example. Not every line is cut to the correct length.

Any help greatly appreciated.
J

Last edited by Franklin52; 11-12-2013 at 09:35 AM.. Reason: Please use code tags
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Capture carriage return.

I try to test the carriage return in a variable. $ LENGTH=`expr $VARIABLE : ".*"` will return the length of the variable. But this doesn't work if $VARIABLE has zero length. Any help will be well appreciated. Thanks in advance. Giovanni (4 Replies)
Discussion started by: gio123bg
4 Replies

2. Shell Programming and Scripting

Dont want carriage return

I have observed with print & echo, they produce carriage return <CR> or newline, after they display string next to them. Is there anyway to avoide these <CR> after the intended string is displayed? (3 Replies)
Discussion started by: videsh77
3 Replies

3. Shell Programming and Scripting

deleting 'carriage return' from string

hi there I'm getting a string from a sqlplus query, and I need to compare it with another string Problem here, is that the string i get from query brings a 'carriage return' with it, and comparing throws always false value. i need to delete all carriage retun charactres in string. how... (6 Replies)
Discussion started by: viko
6 Replies

4. Shell Programming and Scripting

KSH Functions String return

Hy everybody I'm trying to write a function like function(){ final=$1 return $final } but I get following error: "return: bad non-numeric arg ''" what shall I do? Isn't it possible to return strings?:confused: thanks lucae (2 Replies)
Discussion started by: lucae
2 Replies

5. UNIX for Dummies Questions & Answers

Remove ^M (carriage return) with string manipulation

Hello, I want remove ^M at end of my files line if I use command : tr -d '\r' <inp>out it work fine but get I the same result by manipulating the string ? I want this because in my text file I manipulate some other part I have input "the cat^M" I want output "the cat" I have made... (3 Replies)
Discussion started by: aquila_1
3 Replies

6. Shell Programming and Scripting

Search_Replace with a Carriage Return

Hey folks, I've been working on this for some time. Seems simple, but I'm stumped. I need the following data format: New_York:Commercial Geology Geophysics Petrophysics Production_Engineering Reservoir_Engineering Pasadena:Commercial ... (5 Replies)
Discussion started by: leepet01
5 Replies

7. Shell Programming and Scripting

Removing Carriage return in a file after particular string

Hi All, I want to remove carriage return in a file using some unix command without writing a script my file is as follows abc1 abc2 abc3 abc4 abc5 bac6 abc1 abc2 abc3 abc4 abc5 bac6 I want the output as follows: abc1 abc2 abc3 abc4 abc5 bac6 abc1 abc2 abc3 abc4 abc5 bac6 , Please... (7 Replies)
Discussion started by: manish8484
7 Replies

8. Shell Programming and Scripting

Carriage return ksh

Hello, How do i usecarriage return in ksh. I want to do an echo "bla bla" and another echo "bla bla" will appear and replace the first echo on screen. I tried: until ; do echo "bla bla \r" done please advice. Thanks. (3 Replies)
Discussion started by: LiorAmitai
3 Replies

9. Shell Programming and Scripting

Substitute \n with carriage return

Hello all, I've a flat file in the following format: AB\001\CDED\001\ABC\001\nEG\001\HIJF\001\EFG\001\nHI\003\HIUL\003\HIJ\003 And I want to substitute \n with the carriage return. Any help is appreciated! Regards, - Seth (8 Replies)
Discussion started by: sethmj
8 Replies

10. UNIX for Dummies Questions & Answers

Remove carriage return

I need to remove the carriage return comes inbetween the record. Need to have CR only at the end. I used the below command. tr -d '\n' < filewithcarriagereturns > filewithoutcarriagereturns But its removing all the CR and giving one line output. Input File: 12345 abcdegh... (11 Replies)
Discussion started by: srvn_saru
11 Replies
exit(1) 							   User Commands							   exit(1)

NAME
exit, return, goto - shell built-in functions to enable the execution of the shell to advance beyond its sequence of steps SYNOPSIS
sh exit [n] return [n] csh exit [ ( expr )] goto label ksh *exit [n] *return [n] DESCRIPTION
sh exit will cause the calling shell or shell script to exit with the exit status specified by n. If n is omitted the exit status is that of the last command executed (an EOF will also cause the shell to exit.) return causes a function to exit with the return value specified by n. If n is omitted, the return status is that of the last command exe- cuted. csh exit will cause the calling shell or shell script to exit, either with the value of the status variable or with the value specified by the expression expr. The goto built-in uses a specified label as a search string amongst commands. The shell rewinds its input as much as possible and searches for a line of the form label: possibly preceded by space or tab characters. Execution continues after the indicated line. It is an error to jump to a label that occurs between a while or for built-in command and its corresponding end. ksh exit will cause the calling shell or shell script to exit with the exit status specified by n. The value will be the least significant 8 bits of the specified status. If n is omitted then the exit status is that of the last command executed. When exit occurs when executing a trap, the last command refers to the command that executed before the trap was invoked. An end-of-file will also cause the shell to exit except for a shell which has the ignoreeof option (See set below) turned on. return causes a shell function or '.' script to return to the invoking script with the return status specified by n. The value will be the least significant 8 bits of the specified status. If n is omitted then the return status is that of the last command executed. If return is invoked while not in a function or a '.' script, then it is the same as an exit. On this man page, ksh(1) commands that are preceded by one or two * (asterisks) are treated specially in the following ways: 1. Variable assignment lists preceding the command remain in effect when the command completes. 2. I/O redirections are processed after variable assignments. 3. Errors cause a script that contains them to abort. 4. Words, following a command preceded by ** that are in the format of a variable assignment, are expanded with the same rules as a vari- able assignment. This means that tilde substitution is performed after the = sign and word splitting and file name generation are not performed. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
break(1), csh(1), ksh(1), sh(1), attributes(5) SunOS 5.10 15 Apr 1994 exit(1)
All times are GMT -4. The time now is 10:15 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy