Linux Terminal Commands
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These are some useful Linux Terminal Commands for productivity:
Commands using ls etc.
| use | to |
|---|---|
ls -ltr | list files in reverse modification history order with details. |
ls -ltr | tail -n 5 | list only the last (tailing) 5 files from the list. Change 5 to any integer. |
ls | head -n 5 | list only the first 5 files from the list. |
rename 's/original/new/' * | To rename all filenames and directories containing “original” string to “new” string. To recursively do this in sub-directories, use **/*. See: here and here |
for dir in */; do mkdir -- "$dir"/{tmp1,foo,bar,qux}; done | To create directories within sub-directories in one go! |
For opening image files from Terminal
Opening files directly through the Terminal is both easy and fast. Additionally, these commands are useful to view resulting files when using subprocess.run in Python to run Terminal commands.
| use | to |
|---|---|
evince filename | open PDF files and PS document files. |
eog filename | open image files in normal image formats like JPEG, JPG, PNG etc. |
ds9 filename | open FITS format image files. Requires DS9 |
fv filename | open FITS format event lists and datasets. Requires initiation of NASA’s heasarc |