Visit Our UNIX and Linux User Community

Full Discussion: Whole line
Top Forums Programming Whole line Post 18131 by Perderabo on Monday 25th of March 2002 01:05:00 AM
Old 03-25-2002
Use fgets(). Beware of gets() which can also do this but doesn't check for array overflow. gets() is the cause of many security problems over the past decade.
 

9 More Discussions You Might Find Interesting

1. UNIX for Advanced & Expert Users

how do you parse 1 line at a time of file1 ie. line(n) each line into new file

File 1 <html>ta da....unique file name I want to give file=>343...</html> <html>da ta 234 </html> <html>pa da 542 </html> and so on... File 2 343 234 542 and so on, each line in File 1 one also corresponds with each line in File 2 I have tried several grep, sed, while .. read, do,... (4 Replies)
Discussion started by: web_developer
4 Replies

2. 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

3. Shell Programming and Scripting

Fill the empty line by adding line before blank line

FIle A "A" 2 aa 34 3 ac 5 cd "B" 3 hu 67 4 fg 5 gy output shud be A"" 2 aa 34 "A" 3 ac 34 "A" 5 cd 34 "B" 3 hu 67 "B" 4 fg 67 "B" 5 gy 67 (6 Replies)
Discussion started by: cdfd123
6 Replies

4. Solaris

Line too long error Replace string with new line line character

I get a file which has all its content in a single row. The file contains xml data containing 3000 records, but all in a single row, making it difficult for Unix to Process the file. I decided to insert a new line character at all occurrences of a particular string in this file (say replacing... (4 Replies)
Discussion started by: ducati
4 Replies

5. Shell Programming and Scripting

how to read the contents of two files line by line and compare the line by line?

Hi All, I'm trying to figure out which are the trusted-ips and which are not using a script file.. I have a file named 'ip-list.txt' which contains some ip addresses and another file named 'trusted-ip-list.txt' which also contains some ip addresses. I want to read a line from... (4 Replies)
Discussion started by: mjavalkar
4 Replies

6. Shell Programming and Scripting

sed command to replace a line at a specific line number with some other line

my requirement is, consider a file output cat output blah sdjfhjkd jsdfhjksdh sdfs 23423 sdfsdf sdf"sdfsdf"sdfsdf"""""dsf hellow there this doesnt look good et cetc etc etcetera i want to replace a line of line number 4 ("this doesnt look good") with some other line ... (3 Replies)
Discussion started by: vivek d r
3 Replies

7. Shell Programming and Scripting

Need a program that read a file line by line and prints out lines 1, 2 & 3 after an empty line...

Hello, I need a program that read a file line by line and prints out lines 1, 2 & 3 after an empty line... An example of entries in the file would be: SRVXPAPI001 ERRO JUN24 07:28:34 1775 REASON= 0000, PROCID= #E506 #1065: TPCIPPR, INDEX= 003F ... (8 Replies)
Discussion started by: Ferocci
8 Replies

8. Shell Programming and Scripting

How to read file line by line and compare subset of 1st line with 2nd?

Hi all, I have a log file say Test.log that gets updated continuously and it has data in pipe separated format. A sample log file would look like: <date1>|<data1>|<url1>|<result1> <date2>|<data2>|<url2>|<result2> <date3>|<data3>|<url3>|<result3> <date4>|<data4>|<url4>|<result4> What I... (3 Replies)
Discussion started by: pat_pramod
3 Replies

9. UNIX for Beginners Questions & Answers

Get an output of lines in pattern 1st line then 10th line then 11th line then 20th line and so on.

Input file: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 (6 Replies)
Discussion started by: Sagar Singh
6 Replies
scanf(3int)															       scanf(3int)

Name
       scanf, fscanf, sscanf - convert formatted input

Syntax
       #include <stdio.h>

       int scanf( format [, pointer ] ...  )
       char *format;

       int fscanf( stream, format [, pointer ] ...  )
       FILE *stream;
       char *format;

       int sscanf( s, format [, pointer ] ...  )
       char *s, *format;

Description
       The  international functions and are similar to the standard I/O functions. The difference is that the international functions allow you to
       use the %digit$ conversion character in place of the I% character you use in the standard I/O functions. The digit is  a  decimal  digit  n
       from 1 to 9.  The international functions apply conversions to the n th argument in the argument list, rather than to the next unused argu-
       ment.

       You can use % conversion character in the international functions.  However, you cannot mix the % conversion  character	with  the  %digit$
       conversion character in a single call.

       In  all	cases,	uses the radix character and collating sequence that is defined by the last successful call to category or If the radix or
       collating sequence is undefined, the function uses the C locale definitions.

   International Environment
       LC_COLLATE     Contains the user requirements for language, territory, and codeset for the character collation format.  affects the  behav-
		      ior  of regular expressions and the string collation functions in If is not defined in the current environment, provides the
		      necessary default.

       LC_NUMERIC     If this environment is set and valid, uses the international language database named in the definition  to  determine  radix
		      character rules.

       LANG	      If  this environment variable is set and valid uses the international language database named in the definition to determine
		      collation and character classification rules.  If or is defined,	their definitions supersede the definition of LANG.

Examples
       The following shows an example of using the function:
       scanf("%2$s %1$d", integer, string)
       If the input is `` january 9 '', the function assigns 9 to and ``january'' to

Return Values
       The function returns the number of successfully matched and assigned input fields.  This number can be  zero  if  the  function	encounters
       invalid input characters, as specified by the conversion specification, before it can assign input characters.

       If  the	input ends before the first conflict or conversion, returns EOF.  These functions return EOF on end of input and a short count for
       missing or invalid data items.

Environment
       In POSIX mode, the E, F, and X formats are treated the same as the e, f, and x formats, respectively;  otherwise,  the  upper-case  formats
       expect double, double, and long arguments, respectively.

See Also
       intro(3int), setlocale(3), strtod(3), strtol(3), printf(3int), getc(3s), printf(3s), scanf(3s)
       Guide to Developing International Software

																       scanf(3int)

Featured Tech Videos

All times are GMT -4. The time now is 08:04 AM.
Unix & Linux Forums Content Copyright 1993-2021. All Rights Reserved.
Privacy Policy