July 2018
Beginner
264 pages
8h 9m
English
Content preview from Bash Cookbook
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
How to do it...
- Open a terminal and create the mytree.sh script:
#!/bin/bashCURRENT_LVL=0function tab_creator() { local X=0 local LVL=$1 local TABS="." while [ $X -lt $LVL ] do # Concatonate strings TABS="${TABS}${TABS}" X=$[$X+1] done echo -en "$TABS"}function recursive_tree() { local ENTRY=$1 for LEAF in ${ENTRY}/* do if [ -d $LEAF ];then # If LEAF is a directory & not empty TABS=$(tab_creator $CURRENT_LVL) printf "%s\_ %s\n" "$TABS" "$LEAF" CURRENT_LVL=$(( CURRENT_LVL + 1 )) recursive_tree $LEAF $CURRENT_LVL CURRENT_LVL=$(( CURRENT_LVL - 1 )) elif [ -f $LEAF ];then # Print only the bar and not the backwards slash # And only if a file TABS=$(tab_creator $CURRENT_LVL) printf "%s|_%s\n" "$TABS" "$LEAF" continue fi done}PARENTDIR=$1 ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.