Sponsored Content
Top Forums Shell Programming and Scripting Trouble with "|" when creating a variable using perl Post 302783371 by crimso on Wednesday 20th of March 2013 11:11:35 AM
Old 03-20-2013
Trouble with "|" when creating a variable using perl

greetings,

not being much of a perl user i'm having an issue when trying to assign a value to a variable using the following:

Code:
$StatusRawString=`grep -F -e \'time...\' $Glstat | tail -n 1`;

when i execute the perl script i'm using the -w option to get some useful info on how the script is doing (or not doing) and i get the following output:

Code:
sh: -c: line 1: syntax error near unexpected token `|'
sh: -c: line 1: ` | tail -n 1'

it clearly doesn't like my syntax and and appears that it's executing the "| tail -n 1" on its own command line. i've tried dbl quotes and escapes and haven't found the magic combo. i am executing this perl script from a bash shell fyi. any suggestions?

thanx in advance.
 

9 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Explain the line "mn_code=`env|grep "..mn"|awk -F"=" '{print $2}'`"

Hi Friends, Can any of you explain me about the below line of code? mn_code=`env|grep "..mn"|awk -F"=" '{print $2}'` Im not able to understand, what exactly it is doing :confused: Any help would be useful for me. Lokesha (4 Replies)
Discussion started by: Lokesha
4 Replies

2. Shell Programming and Scripting

if [ "variable" = "numerical-range" ]; then

been a while so i'm a bit rusty and need a little help. writing a script that needs to compare $EXECHOST(a number) against a numerical range and then set a value. below isn't working but should give you folks an idea of my goal: if ; then echo "This is a 32B machine, exiting..." if ;... (4 Replies)
Discussion started by: crimso
4 Replies

3. Shell Programming and Scripting

How perl releases "my" variable?

I have a question regarding to the following code: foreach my $Cnt ( @Cnts ) { my $abc = xyx->new(); do sth... aggregatedData->processData($abc); } my question is: whether perl will release the memory assign to "my $abc" each time after processData($abc) is being executed. ... (2 Replies)
Discussion started by: lilili07
2 Replies

4. Shell Programming and Scripting

Creating a Shortcut (to just type "l" but it runs "ls -lah")

How do I create shortcuts? For example: I just want to type one key "l" and have it output the command of "ls -lah" I believe it's creating a file called l with 755 permissions but I'm not sure where to put the file. *if it matters, I'm on a shared hosting web server using cPanel with... (2 Replies)
Discussion started by: ijustsawmars
2 Replies

5. Shell Programming and Scripting

awk command to replace ";" with "|" and ""|" at diferent places in line of file

Hi, I have line in input file as below: 3G_CENTRAL;INDONESIA_(M)_TELKOMSEL;SPECIAL_WORLD_GRP_7_FA_2_TELKOMSEL My expected output for line in the file must be : "1-Radon1-cMOC_deg"|"LDIndex"|"3G_CENTRAL|INDONESIA_(M)_TELKOMSEL"|LAST|"SPECIAL_WORLD_GRP_7_FA_2_TELKOMSEL" Can someone... (7 Replies)
Discussion started by: shis100
7 Replies

6. Shell Programming and Scripting

Perl failure with "main::$fn" used only once:" in error logs

Hi all, Can anyone guess why this is happening? I am new to Perl, so please help me to fix this error: - I have a static html file which calls the cgi-perl script. HTML Code: <html> <head> <title> Hey Dude! </title> </head> <body> <form method="POST"... (3 Replies)
Discussion started by: bashily
3 Replies

7. UNIX for Dummies Questions & Answers

Using "mailx" command to read "to" and "cc" email addreses from input file

How to use "mailx" command to do e-mail reading the input file containing email address, where column 1 has name and column 2 containing “To” e-mail address and column 3 contains “cc” e-mail address to include with same email. Sample input file, email.txt Below is an sample code where... (2 Replies)
Discussion started by: asjaiswal
2 Replies

8. Shell Programming and Scripting

Bash script - Print an ascii file using specific font "Latin Modern Mono 12" "regular" "9"

Hello. System : opensuse leap 42.3 I have a bash script that build a text file. I would like the last command doing : print_cmd -o page-left=43 -o page-right=22 -o page-top=28 -o page-bottom=43 -o font=LatinModernMono12:regular:9 some_file.txt where : print_cmd ::= some printing... (1 Reply)
Discussion started by: jcdole
1 Replies

9. AIX

Apache 2.4 directory cannot display "Last modified" "Size" "Description"

Hi 2 all, i have had AIX 7.2 :/# /usr/IBMAHS/bin/apachectl -v Server version: Apache/2.4.12 (Unix) Server built: May 25 2015 04:58:27 :/#:/# /usr/IBMAHS/bin/apachectl -M Loaded Modules: core_module (static) so_module (static) http_module (static) mpm_worker_module (static) ... (3 Replies)
Discussion started by: penchev
3 Replies
TAIL(1) 						      General Commands Manual							   TAIL(1)

NAME
tail - deliver the last part of a file SYNOPSIS
tail [ +-number[lbc][rf] ] [ file ] tail [ -fr ] [ -n nlines ] [ -c ncharacters ] [ file ] DESCRIPTION
Tail copies the named file to the standard output beginning at a designated place. If no file is named, the standard input is copied. Copying begins at position +number measured from the beginning, or -number from the end of the input. Number is counted in lines, 1K blocks or characters, according to the appended flag or Default is -10l (ten ell). The further flag causes tail to print lines from the end of the file in reverse order; (follow) causes tail, after printing to the end, to keep watch and print further data as it appears. The second syntax is that promulgated by POSIX, where the numbers rather than the options are signed. EXAMPLES
tail file Print the last 10 lines of a file. tail +0f file Print a file, and continue to watch data accumulate as it grows. sed 10q file Print the first 10 lines of a file. SOURCE
/sys/src/cmd/tail.c BUGS
Tails relative to the end of the file are treasured up in a buffer, and thus are limited in length. According to custom, option +number counts lines from 1, and counts blocks and characters from 0. TAIL(1)
All times are GMT -4. The time now is 02:12 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy