Summary of shell related commands

1. echo Instructions , be used for shell String output

• Output string as is , Do not escape or take variables ( single quote )：
• echo 'Toolchain path($CODE_BASE_PATH):' Output ：Toolchain path($CODE_BASE_PATH):
• Replace the passed variable value , Double quotes ,$ Followed by variable name
• As ordered ：
• 
• Output is ：

2. Make the file executable ,

The order is ： chmod  x  filename

3. Keyword search history command ：ctrl+r

4. Display historical command time ：

file #vi /etc/profile Add environment configuration in export HISTTIMEFORMAT="%Y-%m-%d %H:%M:%S "

5. History command fuzzy search ：history | grep '.shm'   Include keywords .shm All the orders of

6. ls -lrt  Display the file details in the directory

7.  irun Emulator add waveform file

initial begin

              $shm_open("waves.shm");

              $shm_probe("AC");

   End

Open waveform ：simvision waves.shm/