I would put forward though that leaving out the default action {print $0} is no more a short-cut than leaving out the default condition 1, and also print prints the default value, which is $0 (and the semicolons are unnecessary). So in full it would be..
Which can of course be combined into 1 block, since the condition is the same (like agama did in post #2)..
I sometimes have a preference for one-liners because I think they are sometimes easier to read (but only if they are short, true one-liners (fewer than 65 characters), and they are great for cutting and pasting or just composing on the command line..
Last edited by Scrutinizer; 07-28-2012 at 06:17 PM..
Hi all
I have tried to search for this, but keep getting a MySQL db connect error, so am posing the question here, and taking a risk of incurring the wrath of the mods with my first post...
I have the following test script:
#!/bin/bash
HTTPD=`/bin/ps -axcu | /usr/bin/grep httpd... (6 Replies)
Hi Guys,
could someone tell me what this ksh construct does
typeset -r PROG_PWD=${0%/*} does
I understand the -r for readonly but I would very much appreciate a definitive account of what this will set $PROG_PWD to.
If I run this at the cmd line it it gets set to /usr/bin but I would... (2 Replies)
I was checking my error logs today and ran into some errors I have not seen before maybe somebody has run into these before?
/etc/cron.quarter-hourly/owusers.sh:
Set effective gid to mail(12) failed!
/usr/local/mailwatch/check_sendmail_relay.sh: line 8:
thanks (1 Reply)
Hi all,
Sorry to ask this easy question but I am stuck. In a scenario i am executing one shell script which contains a if - else construct :
if ; then
echo $line
$line >> successful_build.txt
else
$line >> failed_services.txt
fi
explaination : if the... (5 Replies)
I recently was handed responsibility for a script which has array references that are new to me and I could use some help understanding them.
Parts of the config file and script are included. This script collects backups from a jail server of the jails running on that host. Several jail... (1 Reply)
Hi all
i have been trying to do a small 'question and answer' script using if-else statement and a combination of pipe. I have succeeded in allowing the user to login with user name and password stored in a sequence username/password in a file named "pass" like this:
echo "please enter your... (14 Replies)
Hi,
I need to construct the below path from the two available directory path,
O/P
/home/data/test/run/ht/WEB/HTML
/home/data/test/run/ht/WEB/JSP
/home/data/test/run/ht/WEB/CSS
Path:1
------
/home/data/test/run/
Path:2
------
/home/data/share/app/01/lang/ht/WEB/HTML... (5 Replies)
Hi all,
I thought this would be simple, but I've been having a lot of trouble trying to write this IF statement, if I may ask for help pls:
In BASH, how would I construct the if statement:
Should ONLY be true if USEROPTscript=="yes"]] AND $mode=="INSTALL" /or/ $mode=="CHANGE" ]]... (3 Replies)
Discussion started by: jmccoughlin
3 Replies
LEARN ABOUT DEBIAN
bam
BAM(1) User Commands BAM(1)NAME
bam - fast and flexible build system
SYNOPSIS
bam [OPTION]... [VARIABLE=VALUE]... [TARGET]...
DESCRIPTION
Builds applications using the bam build system.
Execution:
-a abort on error
-c clean targets
-d build targets that is dependent given targets
--dry dry run, don't run any jobs
-j sets the number of threads to use (default: 0, disabled)
-s bam file to use (default: bam.lua)
Lua:
-l print local variables in backtrace
-t print backtrace when an error occurs
Output:
-r build progress report format (default: s) b = progress bar c = use ansi colors s = build steps
-v be verbose
Other:
-n don't use cache
-h, --help
prints this help
Debug:
--debug-nodes
prints all the nodes with dependencies
--debug-detail
prints all the nodes with dependencies and details
--debug-jobs
prints all the jobs that exist
--debug-dot
prints all nodes as a graphviz dot file
--debug-jobs-dot
prints all jobs as a graphviz dot file
--debug-trace-vm
prints a line for every instruction the vm makes
--debug-dump-int
prints the internals scripts to stdout
--debug-no-int
don't load internal scripts
bam by Magnus Auvinen (magnus.auvinen@gmail.com)
bam May 2011 BAM(1)