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1. [bash] Convert all figures in a directory from one format to another
2. [bash] See all PNG figures in a PDF document using Latex
3. [awk] Create distributions from two columns ascii files
4. [awk] Treat Trappes soundings
5. [awk] Treat the ADEME pollutants data
6. [awk] Treat the Meteo-France surface stations data
7. [awk] Treat the Sahelian Dust Transect surface concentrations data