61
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14
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304
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How to echo shell commands as they are executed
In a shell script, how do I echo all shell commands called and expand any variable names? For example, given
48
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Defining a variable with or without export
What is export for? What is the difference between: export name=value and name=value
61
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14
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775
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How to reload .bash_profile from the command line?
How can I reload .bash_profile from the command line? I can get the shell to recognize changes to .bas
53
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23
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How can I declare and use Boolean variables in a shell script?
I tried to declare a Boolean variable in a shell script using the following syntax: variable=$false variable
62
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YYYY-MM-DD format date in shell script
I tried using $(date) in my bash shell script, however, I want the date in YYYY-MM-DD format. How do I get thi
54
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30
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433
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How to specify the private SSH-key to use when executing shell command on Git?
A rather unusual situation perhaps, but I want to specify a private SSH-key to use when executing a shell (git
58
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21
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907
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How to convert a string to lower case in Bash?
Is there a way in bash to convert a string into a lower case string? For example, if I have: a="Hi all" I
66
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12
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Difference between sh and bash
When writing shell programs, we often use /bin/sh and /bin/bash. I usually use bash, but I don't know wha
64
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11
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619
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Check existence of input argument in a Bash shell script
I need to check the existence of an input argument. I have the following script if [ "$1" -gt "-1" ] then e
61
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30
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How do I prompt for Yes/No/Cancel input in a Linux shell script?
I want to pause input in a shell script, and prompt the user for choices. The standard Yes, No, or Cancel type
61
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20
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Loop through an array of strings in Bash?
I want to write a script that loops through 15 strings (array possibly?) Is that possible? Something like: f
55
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30
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851
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How can I count all the lines of code in a directory recursively?
We've got a PHP application and want to count all the lines of code under a specific directory and its su
58
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20
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How do I iterate over a range of numbers defined by variables in Bash?
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58
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16
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How to reload .bashrc settings without logging out and back in again?
If I make changes to .bashrc, how do I reload it without logging out and back in?
58
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30
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How to check if a variable is set in Bash?
How do I know if a variable is set in Bash? For example, how do I check if the user gave the first parameter
59
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14
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1.1K
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How do I set a variable to the output of a command in Bash?
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48
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30
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How do I split a string on a delimiter in Bash?
I have this string stored in a variable: IN="[email protected];[email protected]" Now I would like to split the stri
62
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18
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400
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In the shell, what does " 2>&1 " mean?
In a Unix shell, if I want to combine stderr and stdout into the stdout stream for further manipulation, I can
51
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26
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How to check if a string contains a substring in Bash
I have a string in Bash: string="My string" How can I test if it contains another string? if [ $string ?? &ap
51
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30
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How to concatenate string variables in Bash
In PHP, strings are concatenated together as follows: $foo = "Hello"; $foo .= " World"; Here, $foo becomes