QS之shell script

1　　Invoke Mdoelsim　　

　　In order to open Modelsim automatically, it is better to use a shell script to invoke modelsim.

 1 #!/bin/bash
 2 # ----------------------------------------------------------------------------
 3 # invoke ModelSim
 4 # ----------------------------------------------------------------------------
 5
 6 if [ $# -eq 0 ]; then
 7     cd ‘the working path of Modelsim‘
 8     vsim -gui&
 9 elif [ $1 == "-h" ]; then
10     # questasim doc
11     evince /Software/AMS/current/questasim/v10.3b/docs/pdfdocs/_bk_questa_sim.pdf &
12 fi

2　　Three types of quotes

　　1)　doubel quotes (")

　　　　Anything enclose in doubel quote removed meaning of that chatracter(except \ and $)

　　2)　single quotes (‘)

　　　　Enclosed in single quotes remains unchanged.

　　3)　back quote (`)

　　　　To execute command.

1 $ echo "Today is date"
2 # Today is date
3 $ echo "Toaday is ‘date‘"
4 # Today is ‘date‘
5 $ echo "Today is `date`
6 # Today is Fr 10. Jul 13:36:04 CEST 2015