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linux:ubuntu:useful-commands

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linux:ubuntu:useful-commands [2024/02/08 14:25] – [[ping] Check if a station is alive] odeftalinux:ubuntu:useful-commands [2025/01/02 18:22] (current) – external edit 127.0.0.1
Line 505: Line 505:
 grep -o 'searched_string' file.txt | wc -l grep -o 'searched_string' file.txt | wc -l
 </code> </code>
-o - print each occurrence on a separate line+o - print each occurrence on a separate line \\ 
 l (from wc) - count lines l (from wc) - count lines
  
Line 518: Line 518:
 grep -nri search workspace/C/ | less grep -nri search workspace/C/ | less
 </code> </code>
-n - show line number +n - show line number \\  
-r - recursive+r - recursive \\ 
 i - case insensitive i - case insensitive
  
Line 759: Line 759:
 ls [abc]*.txt ls [abc]*.txt
 </code> </code>
-[abc] - characters a, b or c +[abc] - characters a, b or c \\  
-* - any number of characters (including 0)+* - any number of characters (including 0) \\ 
 .txt - ends with txt .txt - ends with txt
  
Line 1080: Line 1080:
 echo -e "5\n3\n8\n1" | sort -n echo -e "5\n3\n8\n1" | sort -n
 </code> </code>
-e - interpret escape sequences+e - interpret escape sequences \\ 
 n - numbers (sort as numbers) n - numbers (sort as numbers)
  
Line 1956: Line 1956:
 </code> </code>
  
-Eliminare read permission for group:+Eliminate read permission for group:
 <code> <code>
 chmod 601 file.txt chmod 601 file.txt
Line 1962: Line 1962:
 </code> </code>
  
-Eliminare write permission for all:+Eliminate write permission for all:
 <code> <code>
 chmod ugo-w file.txt chmod ugo-w file.txt
linux/ubuntu/useful-commands.1707402344.txt.gz · Last modified: (external edit)