50 Most Frequently Used UNIX / Linux Commands (With Examples)

Several pearl in 50 Most Frequently Used UNIX / Linux Commands (With Examples)

• Add line number for all non-empty-lines in a file

  $ sed '/./=' thegeekstuff.txt | sed 'N; s/\n/ /'

• Remove duplicate lines using awk

  $ awk '!($0 in array) { array[$0]; print }' temp
  

   

• Print all lines from /etc/passwd that has the same uid and gid

  $awk -F ':' '$3==$4' passwd.txt
  

• Go to the 143rd line of file

  $ vim +143 filename.txt
  

   

• Go to the first match of the specified

  $ vim +/search-term filename.txt