jotne - But couldn''t get how the empty lines are getting removed.
rveri - But a blank line does not start with # , so why does it remove it?
It prints lines that start with a character that is not #. A blank line does not start with a character. So a blank line is not printed, so the blank line is removed (as well as a line starting with #).
-------------------------------
An alternative way, maybe easier to understand, using grep:
Code:
grep -v -e '^#' -e '^$' file
This means "print all lines except those that start with # or that are blank".
In perl I want to do remove the top line of my input file then process the next line. I want to do something like
head -1 inputfile > temp
grep -v temp inputfile > newinputfile
cp newinputfile inputfle
is this possible in perl? (3 Replies)
Ok. I'm just starting to use AWK and I have a question. Here's what I'm trying to do:
uname -n returns the following on my box:
ftsdt-svsi20.si.sandbox.com
I want to pipe this to an AWK statement and make it only print:
svsi20
I tried:
uname -n | awk '{ FS = "." ; print $1 }'
... (5 Replies)
I am working with bash on HP-UX server at school.
As practice for scripting, I am trying to make a pretend server admin script that adds a user to the system, deletes a user from the system, and lists all users of the pretend system. I have accomplished this with a select loop. Adding users, and... (2 Replies)
I have a script with this statement:
/usr/xpg4/bin/awk -F"" 'NR==FNR{s=$2;next}{printf "%s\"%s\"\n", $0, s}' LOOKUP.TXT finallistnew.txt >test.txt
I want to include logic or an additional step that says if there is no data in field 3, move the whole line out of test.txt into an additional... (9 Replies)
hello
I have a file with lines of info separated with "|"
I want to amend the second field of the last line, using AWK
my problem is with geting awk to return the last line
this is what I am using
awk 'END{ print $0 }' myFile
but I get an empty result
I tried the... (13 Replies)
Hi fellow linux-ers,
I have a quick question for you. I have the following text, which I would like to modify:
10 121E(121) 16 Jan
34S 132E 24 Feb
42 176E(176) 18 Sep
21S 164E 25 May
15 171W(-171) 09 Jul
How can I do the following 2 modifications using sed and/or awk?
1. in 1st column,... (1 Reply)
gawk 'BEGIN{count=0} /^Jan 5 04:33/,0 && /fail/ && /09x83377/ { count++ } END { print count }' /var/log/syslog
what is wrong with this code? i want to search the strings "fail" and "09x83377" from all entries. im grabbing all entries in the log starting from Jan 5 04:33 to the end of the... (3 Replies)
Hi all,
I've got a file that has 12 fields. I've merged 2 files and there will be some duplicates in the following:
FILE:
1. ABC, 12345, TEST1, BILLING, GV, 20/10/2012, C, 8, 100, AA, TT, 100
2. ABC, 12345, TEST1, BILLING, GV, 20/10/2012, C, 8, 100, AA, TT, (EMPTY)
3. CDC, 54321, TEST3,... (4 Replies)
I am trying to use awk to identify and print out records in fields that are empty along with which line they are in. I hope the awk below is close, it runs but nothing results. Thank you :).
awk
awk -F'\t' 'FNR==NR ~ /^*$/ { print "NR is empty" }' file
file
123 GOOD ID 45... (3 Replies)
Discussion started by: cmccabe
3 Replies
LEARN ABOUT ULTRIX
delch
delch(3cur)delch(3cur)Name
delch, mvdelch, mvwdelch, wdelch - remove character from window
Syntax
#include <cursesX.h>
int delch()
int wdelch(win)
WINDOW *win;
int mvdelch(y, x)
int y, x;
int mvwdelch(win, y, x)
WINDOW *win;
int y, x;
Description
The routine deletes the character under the cursor in the default window. All characters to the right on the same line are moved to the
left one position and the last character on the line is filled with a blank. The cursor position does not change.
The routine deletes the character under the cursor in the specified window. All characters to the right on the same line are moved to the
left one position and the last character on the line is filled with a blank. The cursor position does not change.
The routine moves the cursor to the specified position in the default window. The character found at this location is deleted. All char-
acters to the right on the same line are moved to the left one position and the last character on the line is filled with a blank. The
cursor position does not change.
The routine moves the cursor to the specified position in the specified window. The character found at this location is deleted. All
characters to the right on the same line are moved to the left one position and the last character on the line is filled with a blank. The
cursor position does not change.
The routines and are macros.
Return Values
The and functions return OK on success and ERR on error.
delch(3cur)