Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Read First Character of Each Line in File
Top Forums Shell Programming and Scripting Read First Character of Each Line in File Post 302126505 by azelinsk on Wednesday 11th of July 2007 04:56:59 PM
Old 07-11-2007
Shell_Life's suggestion helped a lot. Processing time went from over 5 hours to 45 minutes. This was the code:

typeset -L1 mOne
while read mLine
do
mOne=$mLine
done < input_file

jim mcnamara was correct that ${line:0:1} would not work.

Thank you for the help.
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

read in a file character by character - replace any unknown ASCII characters with spa

Can someone help me to write a script / command to read in a file, character by character, replace any unknown ASCII characters with space. then write out the file to a new filename/ Thanks! (1 Reply)
Discussion started by: raghav525
1 Replies

2. Shell Programming and Scripting

bash: read file line by line (lines have '\0') - not full line has read???

I am using the while-loop to read a file. The file has lines with null-terminated strings (words, actually.) What I have by that reading - just a first word up to '\0'! I need to have whole string up to 'new line' - (LF, 10#10, 16#A) What I am doing wrong? #make file 'grb' with... (6 Replies)
Discussion started by: alex_5161
6 Replies

3. Shell Programming and Scripting

read the text file and print the content character by character..

hello all i request you to give the solution for the following problem.. I want read the text file.and print the contents character by character..like if the text file contains google means..i want to print g go goo goog googl google like this Using unix Shell scripting... without using... (1 Reply)
Discussion started by: samupnl
1 Replies

4. Shell Programming and Scripting

Read line based on character,

Hi Experts, I have called file1.txt contains below CREATE TABLE "IHUBDEV2"."TLM_BREAK_RULES" ( "OID" VARCHAR2(32) NOT NULL ENABLE, "TLM_PAY_CLASS_OID" VARCHAR2(32) NOT NULL ENABLE, "PUNCHED_BREAKS" NUMBER(1,0) DEFAULT 0 NOT NULL ENABLE, "NORMAL_BREAKS"... (3 Replies)
Discussion started by: naree
3 Replies

5. HP-UX

How to remove new line character and append new line character in a file?

Hi Experts, I have data coming in 4 columns and there are new line characters \n in between the data. I need to remove the new line characters in the middle of the row and keep the \n character at the end of the line. File is comma (,) seperated. Eg: ID,Client ,SNo,Rank 37,Airtel \n... (8 Replies)
Discussion started by: sasikari
8 Replies

6. Shell Programming and Scripting

How to read one character form each line of the file?

Hi, Maybe this iscorrect forum for my question... I should read one character at a fixed position from each line of the file. So how ??? should be substituted in the code below: while read line ; do single_char=`???` echo "$single_char" done < $input_file OK...I did get an... (0 Replies)
Discussion started by: arsii
0 Replies

7. Shell Programming and Scripting

Read file from nth line to specific character

Hi, I want to read the file from nth line (where n is an integer) to until I encounter @ char. Can any one please help me how to do this? Thanks. (3 Replies)
Discussion started by: laalesh
3 Replies

8. Programming

Read text from file and print each character in separate line

performing this code to read from file and print each character in separate line works well with ASCII encoded text void preprocess_file (FILE *fp) { int cc; for (;;) { cc = getc (fp); if (cc == EOF) break; printf ("%c\n", cc); } } int main(int... (1 Reply)
Discussion started by: khaled79
1 Replies

9. Shell Programming and Scripting

Read character by character in line in which space is also included

Hi friend, I have one file , and i want to read that file character by character. I need this script in ksh. while using read option with -n1 am getting error. while read -n1 c read has bad option And if i am using below script, then if in a line has space like this ( Pallvi mahajan)... (10 Replies)
Discussion started by: pallvi_mahajan
10 Replies

10. Post Here to Contact Site Administrators and Moderators

How to read the nth character from the line.?

I have Index Line and I tried to get the 9th character from the file and to check the character is "|" or not. Shell Scripting. Sample Index file. "91799489|K8E|188.004.A.917994892.1099R.c.01.pdf|2013|10/15/2014|002|B|C|C"... (3 Replies)
Discussion started by: pavand
3 Replies

LEARN ABOUT DEBIAN

check-zone-expiration

CHECK-ZONE-EXPIRATION(1p)				User Contributed Perl Documentation				 CHECK-ZONE-EXPIRATION(1p)

NAME

       check-zone-expiration

SYNOPSIS

       # check-zone-expiration dnssec-tools.org paypal.com dnssec-tools.org    will expire in 26 days, 2 hours, 16 minutes, 36 seconds paypal.com
       will expire in 12 days, 17 hours, 7 minutes, 1 second

       # check-zone-expiration -m 1123200 dnssec-tools.org paypal.com paypal.com	  will expire in 12 days, 17 hours, 6 minutes, 22 seconds

DESCRIPTION

       The check-zone-exiration script reports how long until a zone will expire by querying for the zone's (top level) RRSIG and calculating how
       much time is left before the signatures will no longer be valid.  It will then report how much time is left in human readable form.

       If the -m switch is provided with a time argument (in seconds), it will only print output for zones that have less than that time left.

OPTIONS

       -m STRING
       --minimum-reporting=STRING
	   Minimum reporting time, or else be silent for the zone

COPYRIGHT

       Copyright 2012-2012 SPARTA, Inc.  All rights reserved.  See the COPYING file included with the DNSSEC-Tools package for details.

AUTHOR

       Wes Hardaker, hardaker@tislabs.com

SEE ALSO

       donuts(1)

perl v5.14.2							    2012-05-07						 CHECK-ZONE-EXPIRATION(1p)
All times are GMT -4. The time now is 10:35 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy