That said, your fix works, thanks so much! Would you mind explaining a tiny snippet?
Is that just prepending c to $0, basically, and if so, why does it need a close, I don't see an open?
Thanks!
Glad it worked. The line you asked about can be confusing.
The variable 'c' is assigned a command and as a result the construct c | getline basically causes awk to execute a popen() call (pipe open) which executes the command in a child process and pipes the results from that command back to awk. The first line of the output from the command is read by the getline, and since no variable is defined, it is parsed into the standard $0, $1... parameters. If a second getline is used with the same command it would attempt to read the next line of input from the command. This would result in and end of file as the date command returns only one line. So, the command must be closed in order for the next to be successful.
Behind the scenes awk maps the command to the file descriptor, so to close the descriptor the command string must be given to the close() function. This is easiest by assigning the command to a variable.
Hope this makes sense.
---------- Post updated at 00:23 ---------- Previous update was at 00:14 ----------
Found a bit more of a description that might do a better job than the paragraph I posted:
Hello Dudes,
I have a task to make a unix shell script that should search for a
specific TEXT in a file.If that TEXT is found, shell script should add
a comment statement before that TEXT line.
Ex : LINE 1 xxxxx
LINE 2 xxxx CALL xxxx
LINE 3 xxxx PERFORM UNTIL
if i... (1 Reply)
hi all,
I am trying to write some message to a file using the following command.
echo "${MESSAGE}" >&1 | tee -a ${File_name}
can the same be done without using echo . I don't want the result to be displayed to the console. Can anyone guide me.
Thanks in advance (6 Replies)
I'm having problems with writing my sql results to a file:
sqlplus -S username/password@DB <<!!
set echo off
set verify off
set showmode off
set feedback off
set timing off
set linesize 250
set wrap off
set pagesize 0
set newpage none
set tab off
set trimspool on
set colsep... (1 Reply)
Hello,
Currently i have a ksh script which will disply the results in plain text format.
I want to format the result in more readable format like Making bold headings and format with colors etc. Something like html or excel format and send that content as email.
Please help me how i can do... (2 Replies)
How can i print the output of a perl script on a unix console and redirect the same in a log file under same directory simultaneously ?
Like in Shell script, we use tee, is there anything in Perl or any other option ? (2 Replies)
Can any one please help, the code works...I want the output of $result to be saved in an output.txt file which is lcoated in c:\\temp\\output.txt.
$filepath="C:\\temp\\ip.txt";
open (HOSTLIST,"$filepath");
@hosts=(<HOSTLIST>);
foreach $host(@hosts)
{
$results = `nslookup... (1 Reply)
Hello Mates
I am trying to write a script, which appends and prepends the text in a file.
I tried testing with a small file and it worked fine.
but for the large file, the script is wiping the entire file and adds only the word to be appended in the file.
mv $file_name $file_name.bak
sed... (6 Replies)
I need to take 2 input files and create 1 output based on matches from each file. I am looking to match field #1 in both files (Userid) and create an output file that will be a combination of fields from
both file1 and file2 if there are any differences in the fields 2,3,4,5,or 6.
Below is an... (5 Replies)
Hi All,
I have written one script in which am writting the result to the log file.
I want to display the results on the console also
if ;
then
echo "$result doesnot match with the host file">>InputHostsFileErrors.txt
else
echo "$result input matches with the host... (7 Replies)
I am writing a shell script with 2 run time arguments. During the execution if i got any error, then it needs to redirected to a error file and in console. Also both error and output to be redirected to a log file. But i am facing the below error.
#! /bin/sh
errExit ()
{
errMsg=`cat... (1 Reply)
Discussion started by: sarathy_a35
1 Replies
LEARN ABOUT X11R4
vconsole.conf
VCONSOLE.CONF(5) vconsole.conf VCONSOLE.CONF(5)NAME
vconsole.conf - configuration file for the virtual console
SYNOPSIS
/etc/vconsole.conf
DESCRIPTION
The /etc/vconsole.conf file configures the virtual console, i.e. keyboard mapping and console font.
The basic file format of the vconsole.conf is a newline-separated list environment-like shell-compatible variable assignments. It is
possible to source the configuration from shell scripts, however, beyond mere variable assignments no shell features are supported,
allowing applications to read the file without implementing a shell compatible execution engine.
Note that the kernel command line options vconsole.keymap=, vconsole.keymap.toggle=, vconsole.font=, vconsole.font.map=,
vconsole.font.unimap= may be used to override the console settings at boot.
Depending on the operating system other configuration files might be checked for configuration of the virtual console as well, however only
as fallback.
OPTIONS
The following options are understood:
KEYMAP=, KEYMAP_TOGGLE=
Configures the key mapping table of for they keyboard. KEYMAP= defaults to us if not set. The KEYMAP_TOGGLE= can be used to configured
a second toggle keymap and is by default unset.
FONT=, FONT_MAP=, FONT_UNIMAP=
Configures the console font, the console map and the unicode font map. FONT= defaults to latarcyrheb-sun16.
EXAMPLE
Example 1. German keyboard and console
/etc/vconsole.conf:
KEYMAP=de-latin1
FONT=latarcyrheb-sun16
SEE ALSO systemd(1), loadkeys(1), setfont(8), locale.conf(5)AUTHOR
Lennart Poettering <lennart@poettering.net>
Developer
systemd 10/07/2013 VCONSOLE.CONF(5)