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| -rw-r--r-- | bash.html.markdown | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/bash.html.markdown b/bash.html.markdown index 4e1eff9e..8cf7be18 100644 --- a/bash.html.markdown +++ b/bash.html.markdown @@ -44,12 +44,23 @@ if true then echo "This is expected" else - echo "And is was not" + echo "And this is not" fi # Expressions are denoted with the following format: echo $(( 10 + 5 )) +# Unlike other programming languages, bash is a shell — so it works in a context of current directory. +# You can list files and directories in the current directories with ls command: +ls + +# These commands have options that control their execution: +ls -l # Lists every file and directory on a separate line + +# Results of the previous command can be passed to the next command as input. +# grep command filters the input with provided patterns. That's how we can list txt files in the current directory: +ls -l | grep "\.txt" + # Commands can be substitued within other commands using $( ): # The following command displays the number of files and directories in the current directory. echo "There are $(ls | wc -l) items here." |