Sponsored Content
Top Forums UNIX for Dummies Questions & Answers Reading line by line from file. Post 6169 by Optimus_P on Thursday 30th of August 2001 05:09:18 PM
Old 08-30-2001
you could also use a for loop.

Code:
for i in `cat filename`;do
processing.....
done

$i will = each line in the file.

Books: oreilly.com has a book called "Learning the Korn Shell" another great book.
 

9 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Reading a file line by line and processing for each line

Hi, I am a beginner in shell scripting. I have written the following script, which is supposed to process the while loop for each line in the sid_home.txt file. But I'm getting the 'end of file' unexpected for the last line. The file sid_home.txt gets generated as expected, but the script... (6 Replies)
Discussion started by: sagarparadkar
6 Replies

2. Shell Programming and Scripting

reading a file inside awk and processing line by line

Hi Sorry to multipost. I am opening the new thread because the earlier threads head was misleading to my current doubt. and i am stuck. list=`cat /u/Test/programs`; psg "ServTest" | awk -v listawk=$list '{ cmd_name=($5 ~ /^/)? $9:$8 for(pgmname in listawk) ... (6 Replies)
Discussion started by: Anteus
6 Replies

3. Shell Programming and Scripting

[Solved] Problem in reading a file line by line till it reaches a white line

So, I want to read line-by-line a text file with unknown number of files.... So: a=1 b=1 while ; do b=`sed -n '$ap' test` a=`expr $a + 1` $here do something with b etc done the problem is that sed does not seem to recognise the $a, even when trying sed -n ' $a p' So, I cannot read... (3 Replies)
Discussion started by: hakermania
3 Replies

4. UNIX for Dummies Questions & Answers

Parsing file, reading each line to variable, evaluating date/time stamp of each line

So, the beginning of my script will cat & grep a file with the output directed to a new file. The data I have in this file needs to be parsed, read and evaluated. Basically, I need to identify the latest date/time stamp and then calculate whether or not it is within 15 minutes of the current... (1 Reply)
Discussion started by: hynesward
1 Replies

5. Shell Programming and Scripting

How to start reading from the nth line till the last line of a file.

Hi, For my reuirement, I have to read a file from the 2nd line till the last line<EOF>. Say, I have a file as test.txt, which as a header record in the first line followed by records in rest of the lines. for i in `cat test.txt` { echo $i } While doing the above loop, I have read... (5 Replies)
Discussion started by: machomaddy
5 Replies

6. Shell Programming and Scripting

Reading text file, comparing a value in a line, and placing only part of the line in a variable?

I need some help. I would like to read in a text file. Take a variable such as ROW-D-01, compare it to what's in one line in the text file such as PROD/VM/ROW-D-01 and only input PROD/VM into a variable without the /ROW-D-01. Is this possible? any help is appreciated. (2 Replies)
Discussion started by: xChristopher
2 Replies

7. Shell Programming and Scripting

Comparison of fields then increment a counter reading line by line in a file

Hi, i have a scenario were i should compare a few fields from each line then increment a variable based on that. Example file 989878|8999|Y|0|Y|N|V 989878|8999|Y|0|N|N|V 989878|8999|Y|2344|Y|N|V i have 3 conditions to check and increment a variable on every line condition 1 if ( $3... (4 Replies)
Discussion started by: selvankj
4 Replies

8. Shell Programming and Scripting

Reading line by line from live log file using while loop and considering only those lines start from

Hi, I want to read a live log file line by line and considering those line which start from time stamp; Below code I am using, which read line but throws an exception when comparing line that does not contain error code tail -F /logs/COMMON-ERROR.log | while read myline; do... (2 Replies)
Discussion started by: ketanraut
2 Replies

9. UNIX for Beginners Questions & Answers

Reading a file line by line and print required lines based on pattern

Hi All, i want to write a shell script read below file line by line and want to exclude the lines which contains empty value for MOUNTPOINT field. i am using centos 7 Operating system. want to read below file. # cat /tmp/d5 NAME="/dev/sda" TYPE="disk" SIZE="60G" OWNER="root"... (4 Replies)
Discussion started by: balu1234
4 Replies
DtMmdbBookGetShortTitle(library call)									     DtMmdbBookGetShortTitle(library call)

NAME
DtMmdbBookGetShortTitle -- obtains the short title of a book SYNOPSIS
#include <DtMmdb.h> const char* DtMmdbBookGetShortTitle( DtMmdbInfoRequest* request, unsigned int* length); DESCRIPTION
The DtMmdbBookGetShortTitle function returns the short title of the specified book object. Do not use the free function on the returned pointer. Table lookup is involved when the identifier is specified by either the primary_oid or sequence_num field. ARGUMENTS
request Specifies the bookcase in the bookcase descriptor field, as well as a valid value in the primary_oid, the secondary_oid, or the sequence_num field. The primary_oid represents the DtInfo Database object identifier of the TOC section; the secondary_oid rep- resents the object identifier of the book itself; and the sequence_num represents the sequence number of the book within the bookcase (0 based). If more than one of these fields have a valid value, the order of precedence is: primary_oid, secondary_oid, and, last, sequence_num. length Specifies the variable to receive the length of the returned short title, if the returned pointer to the title is not NULL. RETURN VALUE
If DtMmdbBookGetShortTitle completes successfully, it returns a pointer to the book's short title. If it fails, it returns a NULL pointer. EXAMPLE
None. SEE ALSO
DtMmdbBookGetLongTitle(3) DtMmdbBookGetShortTitle(library call)
All times are GMT -4. The time now is 06:16 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy