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linux - How does cat lt; lt; EOF work in bash? - Stack Overflow The cat <<EOF syntax is very useful when working with multi-line text in Bash, eg when assigning multi-line string to a shell variable, file or a pipe Examples of cat <<EOF syntax usage in Bash:
What does the cat command in Powershell mean? cat is a synonym for the Get-Content command, which simply reads the content of document referenced by the passed parameter and outputs to the standard output the contents of it
How to cat lt; lt;EOF gt; gt; a file containing code? - Stack Overflow cat <<'EOF' >> brightup sh or equivalently backslash-escape it: cat <<\EOF >>brightup sh Without quoting, the here document will undergo variable substitution, backticks will be evaluated, etc, like you discovered If you need to expand some, but not all, values, you need to individually escape the ones you want to prevent cat <<EOF >>brightup sh
linux - Retrieve last 100 lines logs - Stack Overflow I need to retrieve last 100 lines of logs from the log file I tried the sed command sed -n -e '100,$p' logfilename Please let me know how can I change this command
What does cat - mean? Linux operators - Stack Overflow If cat - doesn't stop it's because the symbol "-" is for parameter And you run cat with no parameter Actually, it didn't run indefinitely; the shell waits for you to enter the end of the command cat is a command that simply reads files In your example, it will read your file fruits And the pipe | means the output of cat will be the input of your grep
cat - merge files content into one big file - Stack Overflow I'm trying, using bash, to merge the content of a list of files (more than 1K) into a big file I've tried the following cat command: cat * gt; gt; bigfile txt however what this command does is
unix - difference between grep Vs cat and grep - Stack Overflow First one: cat filename | grep regex Normally cat opens file and prints its contents line by line to stdout But here it outputs its content to pipe'|' After that grep reads from pipe (it takes pipe as stdin) then if matches regex prints line to stdout But here there is a detail grep is opened in new shell process so pipe forwards its input as output to new shell process Second one: grep
How to find out line-endings in a text file? - Stack Overflow I'm trying to use something in bash to show me the line endings in a file printed rather than interpreted The file is a dump from SSIS SQL Server being read in by a Linux machine for processing Are