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Bertini :: replaceFirstLine

replaceFirstLine -- Replaces the first line of a file with a string.

Synopsis

Description

replaceFirstLine replaces the first line of a file with a string. This function is used in the trace test functions.

i1 : writeStartFile(storeBM2Files,{{2,3},{4,5}})

o1 = /var/folders/j_/gx42s4z576z_vj47_ym0j5xm0000gn/T/M2-30772-0/0/start

o1 : File
i2 : replaceFirstLine(storeBM2Files,"start","1")

o2 = 0

Ways to use replaceFirstLine :