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As a web developer I use Linux every day. I would like to share some CLI applications that helped me increase my productivity. Some tools are better alternatives of existing commands, while others provide completely new features. I believe you will love them.
All the install commands are tested under Ubuntu 18.04.
ag are two search tools better than
ag, you don’t have to type any options that is required by
grep to search under a given directory. Also the search result includes line number and is colorful, which is easier to read.
They basically have the same feature so you could choose one you like. On Ubuntu 18.04, they can be installed with the following commands:
# Install ack $ sudo apt install ack# Install ag $ sudo apt install silversearcher-ag
On Ubuntu 16.04,
ack was located in package
ack-grep so you have to use
sudo apt install ack-grep to install it but command name was still
fzf is a powerful file finder that can find files, processes, environment variables fast. Compared to native auto completion,
fzf can display the completion items as a list and filter the list as you typing the command, which is much easier than pressing Tab repeatedly and trying to find the file name on a crowded screen.
It is not a ubuntu package yet so we have to install it from source:
git clone --depth 1
"); background-size: 1px 1px; background-position: 0px calc(1em + 1px);">https://github.com/junegunn/fzf.git~/.fzf ~/.fzf/install
After install, you can use
**<TAB> to do auto completion with fzf almost anywhere:
vim **<TAB> # select files from current dir and edit vim ../**<TAB> # select files from parent dir and edit kill -9 <TAB> # auto complete process to kill export **<TAB> # auto complete env var to export <C-R> # search command line history
Have you ever been frustrating when typing a long command line only to find there was a typo in the command or simply missing
sudo? Then TheFuck could help. Install it by typing:
$ sudo apt install thefuck
Then you need to add this line to your
eval $(thefuck --alias)
After re-login (or simply reload
.bashrc by using
source ~/.bashrc), try this:
$ apt install git E: Could not open lock file /var/lib/dpkg/lock - open (13: Permission denied) E: Unable to lock the administration directory (/var/lib/dpkg/), are you root? $ fuck sudo apt install git [enter/↑/↓/ctrl+c] Reading package lists... Done Building dependency tree
htop is so well-known so I won’t talk too much about it.
$ sudo apt install htop $ htop
mtr is a better tool for network troubleshooting. It is faster and easier to use than original
$ sudo apt install mtr
To trace route, simply type:
$ mtr 18.104.22.168
This will bring a GUI window to display the trace route process and result. If you prefer CLI output, add
$ mtr -t 22.214.171.124
pydf can show disk usage in a colorful, easy to read way.
$ sudo apt install pydf
mc (GNU Midnight Commander) is a great file manager for CLI. It uses two-pane view for file management, and also supports FTP and SFTP. Great tool when you need to do many file operations without access to GUI, for example, on the server.
mc uses F1~F10 function keys. If you don’t have access to function keys, for example, when using
mc in terminal emulator where function keys are used for GUI operations, use
Esc -> 0~9 instead.
Although FTP is less popular today but sometimes we need it to access some legacy resources.
lftp is a great CLI FTP client. Compared to
ftp it supports
mput commands that support wildcard, and the powerful
mirror command to download/upload a whole directory. It even supports downloading torrent with
$ sudo apt install lftp
aria2 is a lightweight download tool that supports HTTP/HTTPS, FTP, SFTP, BitTorrent, and most importantly, multi-connection download. Thanks to its multi-connection download feature it can download faster than
wget. It can also resume incomplete download. See
$ sudo apt install aria2 $ aria2c https://example.com/ubuntu.iso
One thing I usually do when running short of disk space is to find the large files / directories with
du -sh * and delete them.
nnn can do this job better. Just type
nnn and press uppercase
S and you will see the sizes for all the directories and files.
$ sudo apt install nnn
Thanks for reading! If this post helps, Please share it with your friends by recommending it.