You can't pass awk variables to the shell directly. You could use an intermediate file or a (named) pipe, or you can use command substitution
or process substitution in bash/ksh93/zsh
--
or a regular pipe in ksh and zsh only
(also works with bash 4 with shopt -s lastpipe in a non-interactive shell)
Last edited by Scrutinizer; 12-30-2014 at 07:28 PM..
Does anybody have an explanation for the following:
The following scripts runs fine on IRIX64 6.5 but has bugs on Solaris 8.
#! /bin/sh
echo run only on an SGI machine
echo type in linenumber
read j
echo value
read value
awk -f rmspass2 level=$value $j'step1.mlf'
When the script is... (5 Replies)
Hi
I have a unix shell script with an awk statement. I would like to print some of the fields of an input file. However, I would like to print them dynamically, ie by passing the literal $1 $3 into the script to define the output.
I have tried the following:
variable1='$1'
awk... (2 Replies)
I am trying to pass the results from a variable gathered from awk, however when I echo the 'PARSE' and 'SUB', the response is blank. This is my command.
awk -F= '/Unit/''{ PARSE=substr($2,1,5) ; SUB=substr($2,1,1) }' inputfile.lst
Is this a kind of valid attempt or am I obligated to declare... (3 Replies)
I have a following problem:
#!/bin/bash
NUM=`cat accounts | wc -l`;
for i in {1..$NUM}
do
account=`awk "NR==$i" accounts`;
echo -e "\nAccount: $account\n";
sudo ./backup_maildir $account;
done "accounts" is a file with regular e-mail addresses, one in each line.... (2 Replies)
Hello everyone,
I've been looking how to pass variables between bash and php-cli in 1 file. So far i got this:
#!/bin/bash
echo "This is bash"
php << EOF
<?php
echo "This is php\n";
?>
EOF
I would now like to be able to pass a variable declared in the bash to the php. I already... (0 Replies)
I'm trying to use awk to write new entries to a hosts file if they don't exist. I need to do so depending on the type of system I have. Below is what I have, but it isn't working.
awk -v myip1=$IP1 myip2=$IP2 myhost1=$HOST1 myhost2=$HOST2' BEGIN { mqhost1=0; mqhost2=0; stap1=0; stap2=0; }
... (4 Replies)
Hi guys,
I need to fetch data from logfile between two given dates,i got the below code from our forum.It works perfect,but i need to enter the value dynamically to awk while running.
awk '/2012 Jun/{p=1}!/2012 Jul/ && prev~/2012 Jul/ && p{p=0}{prev=$0}p' file
i tried the below code,but... (4 Replies)
Heyas
Figured me had a 'typo' in tui-conf-set, i went to fix it.
Now, i also figured, it might be nice to have tui-conf-set report (to console, not only exit code) wether it could save the variable to the file or not.
This said, I appended this code: (the tui-title and tui-echo lines are... (3 Replies)
Am looking to pass some Linux environment variables into AWK , can I simply use the -v option ?
awk -F: -v AHOME=$HOME '{ if
{rm AHOME/file.txt
a=2 } }'
config.txt
... (4 Replies)
Bash version 4.4.20 / Ubuntu 16.0.4
Hello,
I tried to write a script that gathers some data and passes them to an executable.
The executed application answers with an error. The echo output in the script returns correct values.
If I copy/paste the last echo command, it get's executed... (2 Replies)
Discussion started by: sushi2k7
2 Replies
LEARN ABOUT OPENSOLARIS
print
print(1) User Commands print(1)NAME
print - shell built-in function to output characters to the screen or window
SYNOPSIS
ksh
print [-Rnprsu [n]] [arg]...
ksh93
print [-Renprs] [-f format] [-u fd] [string...]
DESCRIPTION
ksh
The shell output mechanism. When no options are specified, or when an option followed by ' a - is specified, or when just - is specified,
the arguments are printed on standard output as described by echo(1).
ksh93
By default, print writes each string operand to standard output and appends a NEWLINE character.
Unless, the -r, -R, or -f option is speciifed, each character in each string operand is processed specially as follows:
a Alert character.
Backspace character.
c Terminate output without appending NEWLINE. The remaining string operands are ignored.
E Escape character (ASCII octal 033).
f FORM FEED character.
NEWLINE character.
Tab character.
v Vertical tab character.
\ Backslash character.
x The 8-bit character whose ASCII code is the 1-, 2-, or 3-digit octal number x.
OPTIONS
ksh
The following options are supported by ksh:
-n Suppresses new-line from being added to the output.
-r-R Raw mode. Ignore the escape conventions of echo. The -R option prints all subsequent arguments and options other than -n.
-p Cause the arguments to be written onto the pipe of the process spawned with |& instead of standard output.
-s Cause the arguments to be written onto the history file instead of standard output.
-u [ n ] Specify a one digit file descriptor unit number n on which the output is placed. The default is 1.
ksh93
The following options are supported by ksh93:
-e Unless -f is specified, process sequences in each string operand as described above. This is the default behavior.
If both -e and -r are specified, the last one specified is the one that is used.
-f format Write the string arguments using the format string format and do not append a NEWLINE. See printf(1) for details on how to
specify format.
When the -f option is specified and there are more string operands than format specifiers, the format string is reprocessed
from the beginning. If there are fewer string operands than format specifiers, then outputting ends at the first unneeded for-
mat specifier.
-n Do not append a NEWLINE character to the output.
-p Write to the current co-process instead of standard output.
-r Do not process sequences in each string operand as described above.
-R
If both -e and -r are specified, the last one specified is the one that is used.
-s Write the output as an entry in the shell history file instead of standard output.
-u fd Write to file descriptor number fd instead of standard output. The default value is 1.
EXIT STATUS
The following exit values are returned:
0 Successful completion.
>0 Output file is not open for writing.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
SEE ALSO echo(1), ksh(1), ksh93(1), printf(1), attributes(5)SunOS 5.11 27 Mar 2008 print(1)