Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: how to read a file using shell ??
Top Forums Shell Programming and Scripting how to read a file using shell ?? Post 302136269 by blowtorch on Sunday 16th of September 2007 11:45:49 PM
Old 09-17-2007
In that case...

Code:
>$Z               #truncate file in $Z to ensure that we start with an empty file
while read line; do
   awk '/'$line'/ {for(i=0;i<7;i++) {print; getline}}' $Y >> $Z #actual work here
done < $p      #read file in $p line-by-line and process each line in while loop

This will work if the pattern in $line occurs only once in the file. If the pattern repeats, you will get multiple outputs for each pattern that is repeated.
 

10 More Discussions You Might Find Interesting

1. UNIX for Advanced & Expert Users

How to read from a file in C shell?

Hi All, I want to read some number from a file into a variable in C shell as follows. I know that the syntax in ksh is read x < file name I dont know what's the equivalent for this in C Shell Can some one pls. help me out? Thanks in advance raju (2 Replies)
Discussion started by: rajugp1
2 Replies

2. Shell Programming and Scripting

Read words from file and create new file using K-shell.

Hi All, Please help me in creating files through K-shell scripts. I am having one file in this format. OWNER.TABLE_NAME OWNER.TABLE_NAME1 OWNER1.TABLE_NAME OWNER1.TABLE_NAME1 I want to read the above file and create new file through k shell script. The new file should looks like this.... (4 Replies)
Discussion started by: bsrajirs
4 Replies

3. Shell Programming and Scripting

Post Shell programming: Question about source a file and read data from the file

This is shell programming assignment. It needs to create a file called .std_dbrc contains STD_DBROOT=${HOME}/class/2031/Assgn3/STD_DB (which includes all my simple database files) and I am gonna use this .std_dbrc in my script file (read the data from the database files) like this: .... (3 Replies)
Discussion started by: ccwq
3 Replies

4. Shell Programming and Scripting

To read and separate number and words in file and store to two new file using shell

hi, I am a begginer in unix and i want to know how to open a file and read it and separate the numbers & words and storing it in separate files, Using shell scripting. Please help me out for this. Regards S.Kamakshi (2 Replies)
Discussion started by: kamakshi s
2 Replies

5. Shell Programming and Scripting

Need shell script to read two file at same time and print out in single file

Need shell script to read two file at same time and print output in single file Example I have two files 1) file1.txt 2) file2.txt File1.txt contains Aaa Bbb Ccc Ddd Eee Fff File2.txt contains Zzz Yyy Xxx (10 Replies)
Discussion started by: sreedhargouda
10 Replies

6. Shell Programming and Scripting

Shell script to read file and check file type

Hi, I have a file with few values in it. I need script help to read file line by line and check: 1/if it's a file (with extension eg .java .css .jar etc ) or 2/if it's a file without extension and treat it as a directory and then check if the directory exists in working copy else create one... (6 Replies)
Discussion started by: iaav
6 Replies

7. UNIX for Dummies Questions & Answers

Shell script to read lines in a text file and filter user data Shell Programming and Scripting

sxsaaas (3 Replies)
Discussion started by: VikrantD
3 Replies

8. Shell Programming and Scripting

Shell script to read specified value from file and echo to the same location to other file.

Hello. I want to to backup some "default:" values from a file do some other job and after restore that "default:" values back. The problem is that the source and destination file has a lot of default: strings in it but with different values... So.. Here is an example: A part of my source... (6 Replies)
Discussion started by: ausdim
6 Replies

9. Shell Programming and Scripting

Read csv file, convert the data and make one text file in UNIX shell scripting

I have input data looks like this which is a part of a csv file 7,1265,76548,"0102:04" 8,1266,76545,"0112:04" I need to make the output data should look like this and the output data will be part of text file: 7|1265000 |7654899 |A| 8|12660000 |76545999 |B| The logic behind the... (6 Replies)
Discussion started by: RJG
6 Replies

10. UNIX for Beginners Questions & Answers

Shell Script to Read the given file contents into a merged one file

Like to have shell script to Read the given file contents into a merged one file with header of path+file name followed by file contents into a single output file. While reading and merging the file contents into a single file, Like to keep the format of the source file. ... (4 Replies)
Discussion started by: Siva SQL
4 Replies

LEARN ABOUT MOJAVE

colrm

COLRM(1)						    BSD General Commands Manual 						  COLRM(1)

NAME

     colrm -- remove columns from a file

SYNOPSIS

     colrm [start [stop]]

DESCRIPTION

     The colrm utility removes selected columns from the lines of a file.  A column is defined as a single character in a line.  Input is read
     from the standard input.  Output is written to the standard output.

     If only the start column is specified, columns numbered less than the start column will be written.  If both start and stop columns are spec-
     ified, columns numbered less than the start column or greater than the stop column will be written.  Column numbering starts with one, not
     zero.

     Tab characters increment the column count to the next multiple of eight.  Backspace characters decrement the column count by one.

ENVIRONMENT

     The LANG, LC_ALL and LC_CTYPE environment variables affect the execution of colrm as described in environ(7).

EXIT STATUS

     The colrm utility exits 0 on success, and >0 if an error occurs.

SEE ALSO

     awk(1), column(1), cut(1), paste(1)

HISTORY

     The colrm command appeared in 3.0BSD.

BSD
								  August 4, 2004							       BSD
All times are GMT -4. The time now is 02:57 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy