If you’ve ever copied a Linux command from a tutorial and it didn’t work, you’re not alone. Especially with I/O redirection (>, >>, pipes, 2>, etc.), one tiny typo or wrong character and everything breaks. This guide walks through real mistakes from a Linux I/O redirection article and shows you how to fix them, step by step. If you’re a…
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If you’ve ever SSH’d into a server, changed some setting, and then… nothing happened, there’s a good chance environment variables were involved. Before: your script can’t find programs, your app can’t see its config, and every new shell feels like it “forgets” what you just set. After: you know exactly how to view, set, export, and persist environment variables so…
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If you’ve just logged in to a Linux server and you’re staring at a blinking cursor thinking, “Now what?” — you’re in the right place. This is for you if you’re new to the command line, running a VPS or small server, and you just want to understand where you are and how to look around without breaking anything. Good…
Read More »Recently, for a fun stuff, I came across a need of an infinite level of categories. I stumbled uponGijs Van Tulder‘s article of “Storing Hierarchical Data in a Database” at SitePoint. Based of Van Tulder article I’m experimenting on my localhost. Below is the contents of my ‘categories’ table:+—–+——-+——–+———-+——+——+ | id | title | parent | parentid | lft |…
Read More »By the way, the green vertical line act as an aid, but many users find its distracting. Follow the steps below to remove the vertical green line in Geany version 0.18 (Ubuntu) window: Run Geany, go to: Edit >> Preferences >> Editor >> Display Select “Disabled” radio options below “Long line marker”. Hit “Apply” and “OK” button.
Read More »I was configuring a newly installed Squid cache on newly installed CentOS 5.2 to use a new partition for it’s cache dir. Squid version: [root@localhost ~]# squid -v Squid Cache: Version 2.6.STABLE6 configure options: ‘–build=i686-redhat-linux-gnu’ ‘–host=i686-redhat-linux-gnu’ ‘–target=i386-redhat-linux-gnu’ ‘–program-prefix=’ ‘–prefix=/usr’ ‘–exec-prefix=/usr’ ‘–bindir=/usr/bin’ ‘–sbindir=/usr/sbin’ ‘–sysconfdir=/etc’ ‘–includedir=/usr/include’ ‘–libdir=/usr/lib’ ‘–libexecdir=/usr/libexec’ ‘–sharedstatedir=/usr/com’ ‘–mandir=/usr/share/man’ ‘–infodir=/usr/share/info’ ‘–exec_prefix=/usr’ ‘–bindir=/usr/sbin’ ‘–libexecdir=/usr/lib/squid’ ‘–localstatedir=/var’ ‘–datadir=/usr/share’ ‘–sysconfdir=/etc/squid’ ‘–enable-epoll’ ‘–enable-snmp’ ‘–enable-removal-policies=heap,lru’ ‘–enable-storeio=aufs,coss,diskd,null,ufs’ ‘–enable-ssl’…
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