Replace backticks with $() in docs (#7818)

GenericMappingTools · Sep 17, 2023 · fb11dd1 · fb11dd1
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diff --git a/doc/rst/source/gmtinfo.rst b/doc/rst/source/gmtinfo.rst
@@ -226,7 +226,7 @@ plot all the points as small black circles using :doc:`plot`, run
 
 ::
 
-  gmt plot `gmt info -I5 -D1 @ship_15.txt` @ship_15.txt -B -Sc2p -pdf map
+  gmt plot $(gmt info -I5 -D1 @ship_15.txt$) @ship_15.txt -B -Sc2p -pdf map
 
 To find the min and max values for each of the first 3 columns, but
 rounded to integers, and return the result individually for each data

diff --git a/doc/rst/source/supplements/mgd77/mgd77list.rst b/doc/rst/source/supplements/mgd77/mgd77list.rst
@@ -516,7 +516,7 @@ cruises.lis, we try
 
 ::
 
-  gmt mgd77list `cat cruises.lis` -E -Ia -F"dist,faa,grav12_2,depth<3000" > \
+  gmt mgd77list $(cat cruises.lis) -E -Ia -F"dist,faa,grav12_2,depth<3000" > \
       shallow_grav.txt
 
 To extract dist, faa, and grav12_2 from all the MGD77+ netCDF files
@@ -525,15 +525,15 @@ records whose bitflag for faa indicates BAD values, we try
 
 ::
 
-  gmt mgd77list `cat cruises.lis` -E -Ia -F"dist,faa,grav12_2:+faa" > bad_grav.txt
+  gmt mgd77list $(cat cruises.lis) -E -Ia -F"dist,faa,grav12_2:+faa" > bad_grav.txt
 
 To output lon, lat, mag, and faa from all the cruises listed in the file
 cruises.lis, but recalculate the two residuals based on the latest
 reference fields, try:
 
 ::
 
-  gmt mgd77list `cat cruises.lis` -Flon,lat,mag,faa -Af2,4 -Am2 > data.txt
+  gmt mgd77list $(cat cruises.lis) -Flon,lat,mag,faa -Af2,4 -Am2 > data.txt
 
 Recalculated Anomalies
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