Differences

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--- команды_фильтры [2018/07/10 09:50]
val
+++ команды_фильтры [2018/10/18 12:55]
val [sort]
@@ Line 7: / Line 7: @@
 <code>
-$ cut -d: -f1 /etc/passwd
 $ cut -d: -f1,7 /etc/passwd
-$ cut -d: -f1-3 /etc/passwd
 $ cut -c1-5 /etc/passwd
+$ cat /etc/passwd | rev | cut -c 2- | rev  #remove last character
 </code>
@@ Line 21: / Line 22: @@
 $ df -h / | tr -s ' '
+# echo "{\"hw_id\":\"2\",\"hw_name\":\"router\"}" | tr -d '{}\\'
 </code>
@@ Line 29: / Line 32: @@
 Ключи -n -r -u -kN
+<code>
+$ sort -n -t . -k 1,1 -k 2,2 -k 3,3 -k 4,4 addresses.txt
+</code>
 ===== uniq =====
@@ Line 86: / Line 92: @@
   * [[https://stackoverflow.com/questions/14928573/sed-how-to-extract-ip-address-using-sed|sed - How to extract IP address using sed?]]
-  * [[Генератор отчетов awk#Подсчет количества элементов]]
+  * Генератор отчетов awk [[Генератор отчетов awk#Выбор строк по числовому условию]]
 <code>
-# grep -oE '((1?[0-9][0-9]?|2[0-4][0-9]|25[0-5])\.){3}(1?[0-9][0-9]?|2[0-4][0-9]|25[0-5])' /var/log/auth.log | sort | uniq -c | sort -n
+# cat /var/log/auth.log | grep -oE '((1?[0-9][0-9]?|2[0-4][0-9]|25[0-5])\.){3}(1?[0-9][0-9]?|2[0-4][0-9]|25[0-5])' | sort | uniq -c | sort -n
 </code>

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