47
votes
16
answers
1.6K
views
How to mkdir only if a directory does not already exist?
I am writing a shell script to run under the KornShell (ksh) on AIX. I would like to use the mkdir command to
48
votes
30
answers
1.1K
views
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
votes
18
answers
400
views
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
52
votes
12
answers
1.3K
views
How do I copy a folder from remote to local using scp?
How do I copy a folder from remote to local host using scp? I use ssh to log in my server. Then, I would like
51
votes
26
answers
2K
views
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
votes
30
answers
1.5K
views
How to concatenate string variables in Bash
In PHP, strings are concatenated together as follows: $foo = "Hello"; $foo .= " World"; Here, $foo becomes
59
votes
30
answers
1.6K
views
How can I check if a directory exists in a Bash shell script?
What command can be used to check if a directory exists or not, within a Bash shell script?
55
votes
30
answers
1.5K
views
How to execute a program or call a system command?
How do you call an external command (as if I'd typed it at the Unix shell or Windows command prompt) from
53
votes
21
answers
335
views
How to execute mongo commands through shell scripts?
I want to execute mongo commands in shell script, e.g. in a script test.sh: #!/bin/sh mongo myDbName db.mycol
52
votes
8
answers
541
views
Pretty print in MongoDB shell as default
Is there a way to tell Mongo to pretty print output? Currently, everything is output to a single line and it&a
56
votes
22
answers
2.4K
views
How can I list all collections in the MongoDB shell?
In the MongoDB shell, how do I list all collections for the current database that I'm using?
