I want to add a line at the beginning and at the end of a file..
e.g.
echo "at the beginning.." > tmp_file &&
cat file >> tmp_file &&
echo "last line" >> tmp_file &&
mv tmp_file file
is there a nice way for doing that??
Thx (2 Replies)
Hi,
I am a relative new bee in scripting. I need to develop a script such that the code would iterate through each file in a source directory and append every line of the file with '|' and the corresponding file filename.
eg
INPUT file IF927_1.dat -
H|abc... (4 Replies)
Hi,
I have one file a.txt ,the contents of the file is
A B C
D E F
and I have another file b.txt, the contents of the file is
1 2 3
4 5 6
now when I am using this command
cat a.txt b.txt > c.txtI am getting the output as
A B C
D E F
1 2 3
4 5 6
but i need the output... (2 Replies)
Hi,
I am new to Sed /awk commands. using that i want to add new empty line after every line in a file by leaving first three lines. So, can any one help me out how to achieve this.
Example:
---------
Input Filename: file1.txt
Input Data:
--------Report--------
Date:20-10-03... (4 Replies)
I have a tab delimited text file,
id name distance
1 3325167 0.334561754018
2 3290488 0.389444269458
3 3288794 0.392312701782
4 3347602 0.392532202097
5 3295355 0.394394169485
I need to add a line after the header line. The first and third field of... (3 Replies)
Hello Everyone,
I need a help from experts of this community regarding one of the issue that I am facing with shell scripting.
My requirement is to append char's at the end of each line of a file. The char that will be appended is variable and will be passed through command line.
The... (20 Replies)
Hi everyone,
currently I writing a script for comparing 2 variable in 2 line then output the line with equal value to new file. However, the new file only contain last line only, the earlier line was delete. I do google my problem but still not find the way out. Sorry for my English.
Thank you... (10 Replies)
I have a shell script that looks something like the following:
mysql -uroot db1 < db1.sql
mysql -uroot db2 < db2.sql
mysql -uroot db3 < db3.sql
mysql -uroot db4 < db4.sql
....
different db names in more than 160 lines.
I want to run this script with nohup and have a status later.
So,... (6 Replies)
Discussion started by: MKH
6 Replies
LEARN ABOUT OPENDARWIN
tmpfile
TMPFILE(3) Linux Programmer's Manual TMPFILE(3)NAME
tmpfile - create a temporary file
SYNOPSIS
#include <stdio.h>
FILE *tmpfile(void);
DESCRIPTION
The tmpfile() function opens a unique temporary file in binary read/write (w+b) mode. The file will be automatically deleted when it is
closed or the program terminates.
RETURN VALUE
The tmpfile() function returns a stream descriptor, or NULL if a unique filename cannot be generated or the unique file cannot be opened.
In the latter case, errno is set to indicate the error.
ERRORS
EACCES Search permission denied for directory in file's path prefix.
EEXIST Unable to generate a unique filename.
EINTR The call was interrupted by a signal; see signal(7).
EMFILE The per-process limit on the number of open file descriptors has been reached.
ENFILE The system-wide limit on the total number of open files has been reached.
ENOSPC There was no room in the directory to add the new filename.
EROFS Read-only filesystem.
ATTRIBUTES
For an explanation of the terms used in this section, see attributes(7).
+----------+---------------+---------+
|Interface | Attribute | Value |
+----------+---------------+---------+
|tmpfile() | Thread safety | MT-Safe |
+----------+---------------+---------+
CONFORMING TO
POSIX.1-2001, POSIX.1-2008, C89, C99, SVr4, 4.3BSD, SUSv2.
NOTES
POSIX.1-2001 specifies: an error message may be written to stdout if the stream cannot be opened.
The standard does not specify the directory that tmpfile() will use. Glibc will try the path prefix P_tmpdir defined in <stdio.h>, and if
that fails the directory /tmp.
SEE ALSO exit(3), mkstemp(3), mktemp(3), tempnam(3), tmpnam(3)COLOPHON
This page is part of release 4.15 of the Linux man-pages project. A description of the project, information about reporting bugs, and the
latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.
2016-03-15 TMPFILE(3)