How to suspend and bring a background process to foreground
I have a process originally running in the foreground. I suspended by Ctrl+Z, and then resume its running in the background by bg <jobid>.
shell
Shell console clearing
Is there a way to clear up what is displayed on the shell console (in ubuntu linux) in just a single key or two? When I get flood of lines from grep and that exceeds the height of the window, I want to quickly scroll back to the position where I typed the command after the prompt. I can do so if I had opened a fresh terminal before I type the command, and just go to the initial position. But if keep using the same terminal window, I have to manually find the position. Ctrl+l is not an answer because it just scrolls, and the contents of the terminal remains. I cannot use less because the colored output of grep does not show up in color.
How can I find a file whose name includes a given string, such as “abcde”?
Within a set of directories, how do I find a file whose name includes a given string, such as “abcde”?
A program that could buffer stdin or file
Aside from using a temporary file to help, is there a way/program could buffer input from stdin but does not output the contents until getting the EOF. I don’t want to use a shell variable either(e.g. buffer=$(cat)).
Tab completion errors: bash: cannot create temp file for here-document: No space left on device
When using the tab bar, I keep getting this error:
Insert new lines with missing values (NA)
I would like to insert new lines in text files if there are missing values.
I have for example the following text file (A.txt), for which line 5 is missing. In addition, as the file should have 12 lines the lines 11-12 are also missing.
grep on a variable
Let’s say I have a variable
How do I time a specific command?
(The linux equivalent of TimeThis.exe)
Rule for invoking subshell in Bash?
I seem to misunderstand the Bash rule for creating a subshell. I thought parentheses always creates a subshell, which runs as its own process.