Unix Command

Today I want to share some basic Unix commands I use recently in Putty.

1. Directory: Direct the path to a certain location

   cd /...
   cd - {home directory}
   pwd {show current working directory}

2. Files: List current files 

   ls {path}
   ls -l {date,size, permission}

3. Check/Change Access: Read is 4. Write is 2. Execute is 1.

   ls -lah
   
   xyz(u,group,everyone else)
   readonly: chmod 444 *(a.file)
   write: chmod 644 *(a.file)
   everyone can read/write/execute chmod 777*

4. Move directory

   mv {folder/old} {folder/new}
   *certain file type
   mv oldfolder/*.log newfolder/

5. Zip/Unzip files

   cd /folder
   zip -r x.zip dir1
   unzip x.zip

6. Execute SAS/Python code

   cd /..
   sas a.sas
   python a.py

7. Copy/Delete files

   Copy: cp {foler/a} {folder/b}
   Delete: rm {folder/a}
   

    

8. Make New Folders: Regular folder vs Root Dated Folder ( prevent accident delete )

   mkdir folder
   emb_makeprot folder(main) SNAPSHORT:subfolder(main/a) AVEND: subsubfolder(main/a/1) AVENDDT:datefolder(1/time)

    

   Thanks Yajnes and Grace share the Unix Code with me 🙂

   Happy Studying!