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--- shellscript [2025/01/19 03:22] – created 1211112228
+++ shellscript [2025/01/19 03:25] (current) – 1211112228
@@ Line 1: / Line 1: @@
 ====== Shell Scripting ======
+Execute shell script:
+  ./script.sh
+  bash script.sh
+  source script.sh
+Read user input:
+  read
+Echo text to screen:
+  echo
+Arithmetic operations:
+  let
+  expr
+Conditional statements:
+  if
+  case
+Loops:
+  for
+  while
+Array operations:
+  declare
+  read -a
+Check file/directory existence:
+  [file] -e
+  [file] -d
+  [file] -f
+Check file permissions:
+  [file] -r
+  [file] -w
+  [file] -x
+Check file type:
+  [file] -b
+  [file] -c
+  [file] -L
+  [file] -S