How to avoid reusing output from Last Command in Bash?
Probably there is some way to prevent this behavior as well. If you are on mac, and don’t mind storing your output in the clipboard instead of writing to a variable, you can use pbcopy and pbpaste as a workaround. For example, instead of doing this to find a file and diff its contents with another file:
How to separate command output to individual lines?
The IFS=$’n’ tells bash to only split the output on newline characcters o get each element of the array. Without it, it will split on spaces, so a file name with spaces.txt would be 5 separate elements instead of one. This approach will break if your file/directory names can contain newlines ( n) though.
Where to find the last command in Bash?
This way the output of last command is in /tmp/last and the command is not called twice. Like konsolebox said, you’d have to hack into bash itself. Here is a quite good example on how one might achieve this. The stderred repository (actually meant for coloring stdout) gives instructions on how to build it.
How to append to the end of a file in Bash?
Use command >> file_to_append_to to append to a file. CAUTION: if you only use a single > you will completely overwrite the contents of the file. To ensure that doesn’t ever happen, you can add set -o noclobber to your .bashrc.
How to use Bash features to set after parsing?
Using bash features to set after parsing. If you don’t want to recompute the previous command you can create a macro that scans the current terminal buffer, tries to guess the -supposed- output of the last command, copies it to the clipboard and finally types it to the terminal.
Where are the recent commands stored in Bash?
The record of recent commands is stored by default in ~/.bash_history. This location can be changed by modifying the HISTFILE shell variable. There are other variables, such as HISTSIZE (lines to store in memory for the current session) and HISTFILESIZE (how many lines to keep in the history file).
How to replace one file with another in Bash?
Use these commands: mv file1 file2 If file2 does not exist, then file1 is renamed file2. If file2 exists, its contents are replaced with the contents of file1.