Adding to this post I just wanted to know how to add some characters other than special characters in every line of a file , say I want to add a "/" at the end of all lines in file. Kindly help. Thank you
Dear Members,
Suppose i have a variable test which stores a string as below:
test='John drives+++++++++a+++++car'
now i want to use sed on the above variable and replace + with a white space, so that i get
echo $test should give me
'john drives a car'
Between... (1 Reply)
Hello All,
I have a doubt in sed, i want to add some parameter at the end of the tag inside a xml tag. how to i do that. so i want to add Results="true" value="high" inside the xml tag.
Orignal
<execute description="reboot">
<execute description="Stop Servlet">
After adding the... (5 Replies)
Hi !
I'm rather new with sed ... learned a lot already by googling etc ...
The following script should replace all spaces and ends-of-lines with "something (see below).
#!/bin/bash
i=0
while read line
do
fam="H`printf "%06d" $i`"
echo $line | sed -e 's//\t'$fam'\n/g'
i=$(($i+1))... (7 Replies)
Hi,
What sed command (if sed is the right command) can remove ALL white space from my file. I have a csv, except I want to remove all white space between commas and characters.
My idea (without testing)
sed 's/ //g'
Is there a better way? (18 Replies)
Hi ,
I have a file with contents as below
group1 = aaaaa, bbbbb, ccccc, aaa
group2=aaa, bbbbb, ccccc, aaaaa
group3 = bbbbb, aaa, ccccc, aaaaa
group4 = bbbbb, aaa,ccccc, aaaaa
I want to search for "aaa" and the output should be as below
group1 = aaaaa, bbbbb, ccccc
group2= bbbbb, ccccc,... (3 Replies)
I understand that the SED command reads all the lines in the file before adding a required line to the end of the file.
Is there another command that adds a line to the end of files without reading the entire file....
SED is increasing the processing time as the number of lines in each of the... (1 Reply)
hi guys
how can i add spacein file name with sed if strings have no space around dash
input
19-20
( 18-19 )
ABC-EFG
output after add white space
19 - 20
(18 - 19 )
ABC - EFG
thx in advance (2 Replies)
Hi Guys,
Hope, you all are doing good out there.
I am writing a shell script and currrint in need of your help.
This is what I need to do;
I have position based plain file. One of the fields is 15 character long. I need to fill that field. The problem is that the value is dynamic, it could... (4 Replies)
Discussion started by: singh.chandan18
4 Replies
LEARN ABOUT FREEBSD
openpam_readword
OPENPAM_READWORD(3) BSD Library Functions Manual OPENPAM_READWORD(3)NAME
openpam_readword -- read a word from a file, respecting shell quoting rules
LIBRARY
Pluggable Authentication Module Library (libpam, -lpam)
SYNOPSIS
#include <sys/types.h>
#include <stdio.h>
#include <security/pam_appl.h>
#include <security/openpam.h>
char *
openpam_readword(FILE *f, int *lineno, size_t *lenp);
DESCRIPTION
The openpam_readword() function reads the next word from a file, and returns it in a NUL-terminated buffer allocated with malloc(3).
A word is a sequence of non-whitespace characters. However, whitespace characters can be included in a word if quoted or escaped according
to the following rules:
o An unescaped single or double quote introduces a quoted string, which ends when the same quote character is encountered a second time.
The quotes themselves are stripped.
o Within a single- or double-quoted string, all whitespace characters, including the newline character, are preserved as-is.
o Outside a quoted string, a backslash escapes the next character, which is preserved as-is, unless that character is a newline, in which
case it is discarded and reading continues at the beginning of the next line as if the backslash and newline had not been there. In all
cases, the backslash itself is discarded.
o Within a single-quoted string, double quotes and backslashes are preserved as-is.
o Within a double-quoted string, a single quote is preserved as-is, and a backslash is preserved as-is unless used to escape a double
quote.
In addition, if the first non-whitespace character on the line is a hash character (#), the rest of the line is discarded. If a hash charac-
ter occurs within a word, however, it is preserved as-is. A backslash at the end of a comment does cause line continuation.
If lineno is not NULL, the integer variable it points to is incremented every time a quoted or escaped newline character is read.
If lenp is not NULL, the length of the word (after quotes and backslashes have been removed) is stored in the variable it points to.
RETURN VALUES
If successful, the openpam_readword() function returns a pointer to a dynamically allocated NUL-terminated string containing the first word
encountered on the line.
The caller is responsible for releasing the returned buffer by passing it to free(3).
If openpam_readword() reaches the end of the line or file before any characters are copied to the word, it returns NULL. In the former case,
the newline is pushed back to the file.
If openpam_readword() reaches the end of the file while a quote or backslash escape is in effect, it sets errno to EINVAL and returns NULL.
IMPLEMENTATION NOTES
The parsing rules are intended to be equivalent to the normal POSIX shell quoting rules. Any discrepancy is a bug and should be reported to
the author along with sample input that can be used to reproduce the error.
SEE ALSO openpam_readline(3), openpam_readlinev(3), pam(3)STANDARDS
The openpam_readword() function is an OpenPAM extension.
AUTHORS
The openpam_readword() function and this manual page were developed by Dag-Erling Smorgrav <des@des.no>.
BSD September 12, 2014 BSD