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Bash script error [: !=: unary operator expected

...ary concerns. In the case the first arg is '-v', then do your conditional ps -ef, else in all other cases throw the usage. #!/bin/sh case $1 in '-v') if [ "$1" = -v ]; then echo "`ps -ef | grep -v '\['`" else echo "`ps -ef | grep '\[' | grep root`" fi;; *) ...
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Java: PrintStream to String?

... final String utf8 = StandardCharsets.UTF_8.name(); try (PrintStream ps = new PrintStream(baos, true, utf8)) { yourFunction(object, ps); } String data = baos.toString(utf8); share | ...
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What does Expression.Quote() do that Expression.Constant() can’t already do?

...question of whether to use Quote or Constant is a moot point: var ps = Expression.Parameter(typeof(int), "s"); var pt = Expression.Parameter(typeof(int), "t"); var ex1 = Expression.Lambda( Expression.Lambda( Expression.Add(ps, pt), ...
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How to return an empty ActiveRecord relation?

...o something like this: scope :users, lambda { |ids| ids.present? ? where("user_id IN (?)", ids) : limit(0) } share | improve this answer | follow | ...
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Execute PowerShell Script from C# with Commandline Arguments

... Never mind. Sometimes it helps when you know how to correctly split strings. ;-) Thanks again, your solution helped me in resolving my problem! – Mephisztoe Feb 9 '09 at 12:37 ...
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How to redirect the output of a PowerShell to a file during its execution

... I take it you can modify MyScript.ps1. Then try to change it like so: $( Here is your current script ) *>&1 > output.txt I just tried this with PowerShell 3. You can use all the redirect options as in Nathan Hartley's answer. ...
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How to check if a particular service is running on Ubuntu

... Maybe what you want is the ps command; ps -ef will show you all processes running. Then if you have an idea of what you're looking for use grep to filter; ps -ef | grep postgres ...
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Is mongodb running?

... check with either: ps -edaf | grep mongo | grep -v grep # "ps" flags may differ on your OS or /etc/init.d/mongodb status # for MongoDB version < 2.6 /etc/init.d/mongod status # for MongoDB version >= 2.6 or ser...
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Installing Ruby Gem in Windows

I'm new to ruby. I tried to install GEM on my PC by following the steps given in the site http://rubygems.org/pages/download . ...
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How to get a list of current open windows/process with Java?

... This is another approach to parse the the process list from the command "ps -e": try { String line; Process p = Runtime.getRuntime().exec("ps -e"); BufferedReader input = new BufferedReader(new InputStreamReader(p.getInputStream())); while ((line = input.readLine()) !=...