I want to use sed to look for spaces in text and when find one move the next word to the next line.
I used:
sed 's/ /\n/g' out > new
However when there is more than one space between two words it adds more lines between them. And I just want the words to be one under another. How can I... (2 Replies)
Hi,
I have a huge file & I want to add a specific text in column. But I want to add this text from a specific line number to a specific line number & another text in to another range of line numbers.
To be more specific: lets say my file has 1000 lines & 4 Columns. I want to add text "Hello"... (2 Replies)
Hi,
In files, I have a field Date Of Birth (DOB). After that line I need to add Date of Joining (DOJ)
DOB:19-Apr-1981
needs to become
DOB:19-Apr-1981
DOJ:20-Jun-2005
What can be a sed/perl line that can do it for me. Please note that DOB/DOJ I have in variables
I am doing in a... (6 Replies)
hello i need some help here are the contents of my file.
test.txt
this is filename 1.mp3 http://www.url.com/filenamehashed
filename 2.mp3 http://www.url.com/fileamehashed
something_else.zip http://www.url.com/filenamehashed
so this file has 100 of these lines
filename url
I would... (9 Replies)
using sed to replace a specific string on a specific line number using variables
this is where i am at
grep -v WARNING output | grep -v spawn | grep -v Passphrase | grep -v Authentication | grep -v '/sbin/tfadmin netguard -C'| grep -v 'NETWORK>' >> output.clean
grep -n Destination... (2 Replies)
I'm trying to update a text file via sed/awk, after a lot of searching I still can't find a code snippet that I can get to work.
Brief overview:
I have user input a line to a variable, I then find a specific value in this line 10th field in this case. After asking for new input and doing some... (14 Replies)
Hi,
I want to add a text to the end of the specific line in a file. Now my file looks like this:
999
111
222
333
111
444
I want to add the string " 555" to the end of the first line contaning 111. Moreover, I want to insert a newline after this line containg the "000" string. The... (8 Replies)
The file which is used is
/abc/apps/cobbbbbb/apps/abadv/binder/axyz.bnd
/abc/apps/cobbbbbb/apps/abbrio/binder/na6115.bnd
/abc/apps/cobbbbbb/apps/abbrio/binder/kc22.bnd
/abc/apps/cobbbbbb/apps/abbrio/binder/tr4823.bnd
/abc/apps/cobbbbbb/apps/abcmp/binder/cpc0105.bnd
The commads which I ran... (3 Replies)
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
LEARN ABOUT CENTOS
unsetenv
SETENV(3) Linux Programmer's Manual SETENV(3)NAME
setenv - change or add an environment variable
SYNOPSIS
#include <stdlib.h>
int setenv(const char *name, const char *value, int overwrite);
int unsetenv(const char *name);
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
setenv(), unsetenv():
_BSD_SOURCE || _POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600
DESCRIPTION
The setenv() function adds the variable name to the environment with the value value, if name does not already exist. If name does exist
in the environment, then its value is changed to value if overwrite is nonzero; if overwrite is zero, then the value of name is not
changed. This function makes copies of the strings pointed to by name and value (by contrast with putenv(3)).
The unsetenv() function deletes the variable name from the environment. If name does not exist in the environment, then the function suc-
ceeds, and the environment is unchanged.
RETURN VALUE
The setenv() function returns zero on success, or -1 on error, with errno set to indicate the cause of the error.
The unsetenv() function returns zero on success, or -1 on error, with errno set to indicate the cause of the error.
ERRORS
EINVAL name is NULL, points to a string of length 0, or contains an '=' character.
ENOMEM Insufficient memory to add a new variable to the environment.
CONFORMING TO
4.3BSD, POSIX.1-2001.
NOTES
POSIX.1-2001 does not require setenv() or unsetenv() to be reentrant.
Prior to glibc 2.2.2, unsetenv() was prototyped as returning void; more recent glibc versions follow the POSIX.1-2001-compliant prototype
shown in the SYNOPSIS.
BUGS
POSIX.1-2001 specifies that if name contains an '=' character, then setenv() should fail with the error EINVAL; however, versions of glibc
before 2.3.4 allowed an '=' sign in name.
SEE ALSO clearenv(3), getenv(3), putenv(3), environ(7)COLOPHON
This page is part of release 3.53 of the Linux man-pages project. A description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
GNU 2009-09-20 SETENV(3)