1
vote
1answer
52 views

Is there an advantage in using ksh over zsh? [closed]

Or are there any advantages for using ksh over zsh? Would any specific commands not execute successfully across the shells or are the major differences not command related, but something else?
0
votes
2answers
382 views

Comparison of shells? [closed]

Do shells have any actual advantages or disadvantages? They can all run any binary, they all support pipes and > (output to file). Why would one choose bash over sh, or sh over ksh, etc? Why does ...
1
vote
1answer
729 views

Do shells support recursion?

I'm trying to write recursive functions in my shell scripts. Consider the following code: function printA { if [[ "$1" = 0 ]]; then return else echo "a$(printA $(("$1" - 1)))" ...
6
votes
1answer
323 views

Ksh features incorporated into Zsh?

I have been a user of Bash for some time. I want to learn at least one other shell now, so I have been picking up the Korn Shell. However, it doesn't look like Ksh has had major updates for almost ...
2
votes
1answer
109 views

When is using ~+ useful?

As I understand it, ~+ means the same thing as "the current working directory". So echo ~+ should print the same as pwd. What is the purpose of this tilde expansion ~+ ?
3
votes
2answers
502 views

ANDed conditional using regexp and variables

I want to test whether a line, read in from a file, has a specific beginning AND an ending containing a word held in a variable. Here's some code: The input file is: line one #; line two #; line ...
26
votes
5answers
2k views

When do you use brace expansion?

I understand what brace expansion is, but I don't know how best to use it. When do you use it? Please teach me some convenient and remarkable examples if you have your own tip.
106
votes
1answer
19k views

Difference between nohup, disown and &

What is the difference between $ nohup foo and $ foo & and $ foo & $ disown