If I try to use a for loop on the above script (which I called exon.sh) to define $file I get empty output.
In the for loop the static will never change only the $file variable will (always .txt file). If I hardcode the files to use as part of the script then the desired output is achieved. I did not mention this in the original post because I thought the for loop would be able to be used. However I seem to be using it incorrectly. Thank you .
I have a line like this:
I want to move HTTP/1.1 200 OK to the next line and put a blank line between the two lines i.e.
How can i get it using awk?
Thanks in advance (2 Replies)
Hi All,
I was wondering if anyone knew how to dynamically change the FS in awk to accept vairiable containing a field separator. the current code is as below and does not work when i introduce the dynamic FS change :-(
validate_source_file()
{
source_file=$1
... (2 Replies)
Hi, all
I need to get fields in a line that are separated by commas, some of the fields are enclosed with double quotes, and they are supposed to be treated as a single field even if there are commas inside the quotes.
sample input:
for this line, 5 fields are supposed to be extracted, they... (8 Replies)
First, thanks for the help in previous posts... couldn't have gotten where I am now without it!
So here is what I have, I use AWK to match $1 and $2 as 1 string in file1 to $1 and $2 as 1 string in file2. Now I'm wondering if I can extend this AWK command to incorporate the following:
If $1... (4 Replies)
Hi. I'd appreciate if I can get some direction in this issue to get me going.
Datafile1:
-About 4000 records, I have to update field#4 in selected records based on a match in the key field (Field#1).
-Field #1 is the key field (servername) . # of Fields may vary
# comment
server1 bbb ccc... (2 Replies)
Hi !
input:
111|222|333|aaa|bbb|ccc
999|888|777|nnn|kkk
444|666|555|eee|ttt|ooo|ppp
With awk, I am trying to change the FS "|" to "; " only from the 4th field until the end (the number of fields vary between records).
In order to get:
111|222|333|aaa; bbb; ccc
999|888|777|nnn; kkk... (1 Reply)
Hi Experts,
i need to change delimiter from tab to ","
sample test file
cat test
A0000368 A29938511 072569352 5 Any 2 for £1.00 BUTCHERS|CAT FOOD|400G Sep 12 2012 12:00AM Jan 5 2014 11:59PM Sep 7 2012 12:00AM M 2.000 group 5
... (2 Replies)
In the below awk in the first step I default Classification NF-1 to VUS. Next, I am trying to change the value of Classification (NF) to whatever CLINSIG (NF-1) is. If there is only one condition everything works great, but if there are two conditions it does not work. Is the syntax used... (4 Replies)
In the awk below I am trying to copy the entire contents of $6 there may be multiple values seperated by a ;, to $8, if $8 is . (lines 1 and 3 are examples). If that condition $8 is not . (line2 is an example) then that line is skipped and printed as is. The awk does execute but prints the output... (3 Replies)
Discussion started by: cmccabe
3 Replies
LEARN ABOUT CENTOS
basename
BASENAME(3) Linux Programmer's Manual BASENAME(3)NAME
basename, dirname - parse pathname components
SYNOPSIS
#include <libgen.h>
char *dirname(char *path);
char *basename(char *path);
DESCRIPTION
Warning: there are two different functions basename() - see below.
The functions dirname() and basename() break a null-terminated pathname string into directory and filename components. In the usual case,
dirname() returns the string up to, but not including, the final '/', and basename() returns the component following the final '/'. Trail-
ing '/' characters are not counted as part of the pathname.
If path does not contain a slash, dirname() returns the string "." while basename() returns a copy of path. If path is the string "/",
then both dirname() and basename() return the string "/". If path is a NULL pointer or points to an empty string, then both dirname() and
basename() return the string ".".
Concatenating the string returned by dirname(), a "/", and the string returned by basename() yields a complete pathname.
Both dirname() and basename() may modify the contents of path, so it may be desirable to pass a copy when calling one of these functions.
These functions may return pointers to statically allocated memory which may be overwritten by subsequent calls. Alternatively, they may
return a pointer to some part of path, so that the string referred to by path should not be modified or freed until the pointer returned by
the function is no longer required.
The following list of examples (taken from SUSv2) shows the strings returned by dirname() and basename() for different paths:
path dirname basename
/usr/lib /usr lib
/usr/ / usr
usr . usr
/ / /
. . .
.. . ..
RETURN VALUE
Both dirname() and basename() return pointers to null-terminated strings. (Do not pass these pointers to free(3).)
CONFORMING TO
POSIX.1-2001.
NOTES
There are two different versions of basename() - the POSIX version described above, and the GNU version, which one gets after
#define _GNU_SOURCE /* See feature_test_macros(7) */
#include <string.h>
The GNU version never modifies its argument, and returns the empty string when path has a trailing slash, and in particular also when it is
"/". There is no GNU version of dirname().
With glibc, one gets the POSIX version of basename() when <libgen.h> is included, and the GNU version otherwise.
BUGS
In the glibc implementation of the POSIX versions of these functions they modify their argument, and segfault when called with a static
string like "/usr/". Before glibc 2.2.1, the glibc version of dirname() did not correctly handle pathnames with trailing '/' characters,
and generated a segfault if given a NULL argument.
EXAMPLE
char *dirc, *basec, *bname, *dname;
char *path = "/etc/passwd";
dirc = strdup(path);
basec = strdup(path);
dname = dirname(dirc);
bname = basename(basec);
printf("dirname=%s, basename=%s
", dname, bname);
SEE ALSO basename(1), dirname(1)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 2009-03-30 BASENAME(3)