Sandra Henry-Stocker

Unix Dweeb

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Sandra Henry-Stocker has been administering Unix systems for more than 30 years. She describes herself as "USL" (Unix as a second language) but remembers enough English to write books and buy groceries. She lives in the mountains in Virginia where, when not working with or writing about Unix, she's chasing the bears away from her bird feeders.

The opinions expressed in this blog are those of Sandra Henry-Stocker and do not necessarily represent those of IDG Communications, Inc., its parent, subsidiary or affiliated companies.

Using the Linux look command to select lines from files

The truth about Linux true and false commands

The truth about Linux true and false commands

How the true and false commands work, and how to put them to use on the command line and in scripts.

Splitting files on Linux by context

Splitting files on Linux by context

The Linux csplit command provides a way to break files into pieces based on the content of the files.

New Year's resolutions for Linux sysadmins in 2022

New Year's resolutions for Linux sysadmins in 2022

The beginning of a new year is always a good time to review what has gone well and not so well and make decisions about how you want to improve your work and your life.

Timedatectl can control your Linux time and time zone

Timedatectl can control your Linux time and time zone

The timedatectl command allows you to examine date and time zone settings and, if you need, to make changes

Looking at Linux disk usage with the ncdu command

Looking at Linux disk usage with the ncdu command

The ncdu command provides detailed data on disk usage by running through the contents of the current directory and collecting file sizes.

Using whois/jwhois on Linux

Using whois/jwhois on Linux

The whois and jwhois command can retrieve extensive details on domain registrations including domain registrants, domain status, responsible organizations and their locations.

Use dmseg to check your Linux system's kernel message buffer

Use dmseg to check your Linux system's kernel message buffer

While the dmesg command can display the entire contents of the Linux kernel message buffer there are ways to have it choose just what you want to see.

Shortcuts for adding multiple lines of text to files on Linux

Shortcuts for adding multiple lines of text to files on Linux

It's easy to add a few lines of text to files on Linux, but there are tools that make it easier to add many lines.

Using the script command on Linux to record command line activity

Using the script command on Linux to record command line activity

The script command not only makes a record of what commands you run but also allows you to save the output generated so that you can examine it later or easily turn your command sequences into scripts.

Monitoring  Linux system resources with bpytop

Monitoring Linux system resources with bpytop

The bpytop tool works a lot like other performance monitoring tools, but gives you tremendous control over what it shows you.

Using chpasswd to change account passwords on Linux

Using chpasswd to change account passwords on Linux

The chpasswd command allows Linux admins to change passwords one at a time or many at a time. Here's what you need to watch out for.

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