Bash Tips

Collection of Bash tips and tricks

2024-07-13 04:17:53
Find append found paths

TLDR find <DIRECTORY> -type f -exec <COMMAND> {} '+'
2019-11-02 04:37:30
Prevent single commands from being logged to Bash History

TLDR <COMMAND>; history -d $((HISTCMD-1))
2019-08-25 04:01:32
Redirect local standard-in to remote over SSH

TLDR utilize here-doc or here-string
2019-08-24 01:28:33
List content of path one per line

TLDR ls -1 ensures output is one directory or file per line
2019-08-18 23:24:35
Pass multiple lists to function by reference

TLDR local -n list_name
2019-08-18 08:09:37
Reverse list example

TLDR use a for loop over indices
2019-08-16 19:11:53
Function keyword definition

TLDR man --pager='less -p "Shell Function Definitions"' bash
2019-08-16 00:09:07
Define custom functions instead of using `eval`

TLDR use now(){ date +'%Y-%m-%d %H:%M:%S'; }
2019-08-14 22:01:32
List pattern substitution example

TLDR use /<pattern>/<substitution> or //<pattern>/<substitution> to find/replace first or all occurrences in a list
2019-08-13 06:15:53
Heredoc to variable via `read`

TLDR read -r -d '' _var <<EOF
2019-08-12 06:00:56
Log upgrades via `script` command

TLDR script -ac "sudo apt-get upgrade" "$(date +'%Y-%m-%d')_sudo_apt-get_upgrade.script"
2019-08-12 00:06:38
Sanitize input string

TLDR printf '%q\n' 'some th!ng n@$ty'
2019-08-11 22:34:50
Searching `man` via pager

TLDR man --pager='less --pattern=" -P pager"' man