Linux: BASH Shell Misc Tips

By Xah Lee. Date:

How to find the exit code of last shell command?

In bash, echo $? prints the exit code of last command.

when you type kill in terminal, is it calling bash builtin or /bin/kill?

If you are using bash, type type kill to find out.

In Ubuntu 12.04, clearly it's calling the bash version. You can confirm by comparing the output of:

kill -l

/bin/kill -l

How do i start bash without loading any init files?

bash --noprofile --norc

See also: Difference Between .bashrc, .profile, .bash_profile, …?.

How to do set font for xterm?

In xterm, hold Ctrl then right click to change font size. Also, Left and middle click change other options.

Linux Shell Basics

  1. Get System Info
  2. Shell Basics
  3. grep, cat, awk, uniq
  4. sort
  5. find, xargs
  6. diff Files/Dir
  7. dir size: du
  8. dir tree
  9. tar gzip bzip2 xz 7zip rar zip
  10. wget, curl, GET, HEAD
  11. rsync
  12. Install Packages

Sys Admin

  1. Job Control
  2. ps
  3. top
  4. htop
  5. RAM stat
  6. Users and Groups
  7. File Permission
  8. Opened Files: lsof
  9. shutdown, sleep

Bash/Terminal

  1. Bash Keys, Terminal Keys, Man Page Keys
  2. Bash Prompt Setup
  3. Bash Color Prompt
  4. .bashrc, .profile, .bash_profile
  5. Virtual Console
  6. Terminal Control Sequence Keys
  7. Reset Terminal
  8. tmux
  9. man page
  10. Bash Manual in Chapters
  11. BASH Shell Misc Tips
  12. Log Terminal Session

Linux Desktop

  1. Most Useful GUI Apps
  2. Set Default App
  3. Shell Commands for GUI Apps
  4. Image Viewers
  5. Music Players
  6. Move File to Trash by Command
  7. X11 Selection and Clipboard
  8. How to Switch to LXDE, Xfce
  9. LXDE Keyboard Shortcuts
  10. LXDE/Openbox, Change Keyboard Shortcuts
  11. LXDE Set Key Repeat Rate
  12. LXDE/OpenBox, Disable Mouse Scroll Wheel Hide Window
  13. Xfce Keyboard Shortcuts
  14. Xfce Good Themes
  15. xmonad Keybinding
  16. How to Restart X11
  17. Why Tiling Window Manager Sucks
  18. Standard Fonts
  19. How to Install Font

If you have a question, put $5 at patreon and message me.