Cheatography
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Various UNIX shell commands for programming, env and system management. Those commends are helpful, to me, but not often used. I had made this sheet to avoid periodically searching another time for the same thing.
sshsshfs [USER@HOST]:[remote_directory] mountpoint [options]
| mount remote drive in mountpoint | ssh -o ServerAliveInterval=X -o ServerAliveCountMax=Y [HOST]
| Maintaing ssh conection for X seconds and Y tries | ssh-copy-id -i ~/.ssh/id_rsa [USER@HOST]
| add autentication via ssh, not .pub file | autossh -N -f -L localhost:[PORTU]:localhost:[PORTR] [USER@HOST]
| map local port PORTU to PORTR on USER@HOST with autoreconnect |
operations on files & drivescp -r $(<file_listed.txt) outdir
| copies files & directories listed in file_listed.txt to outdir | xargs -a file_listed.txt cp -r -t outdir
| same as above | tar -(v)czf file.tar.gz /path/to_compres
| create -cf archive -xf for extract | unzip file.zip -d file
| unzip file.zip to file directory (must exists before) | mkdir -p dir
| make parent directories as needed, no error | rm -r !(*.ext)
| delete everything except files with extension .ext | du -hs dir
| check size of dir use -h for GB or -m for MB | basename path/basename.ext .ext
| get basename from path without ext | grep -i -r -E 'pattern1|pattern2|pattern3'
| multiple patterns with grep -i case insensitive -r recursive | find -(i)name "pattern" -type d/f
| list f files or d directories with matching pattern |
| | Statementswhile read line; do [Command] done < input.file
| Loop over file content | for file in ./*.extention; do [Command] done
| loop over files in directory | if test -f file.txt; then [Command] fi
| check if file exists -f , -d for directory | if [-f file.txt]; then [Command] fi
| same different syntax | if [ -z "$S1" ]; then fi
| checks if arg $1 is empty | function function_name { <commands> }
| function declaration, $1 $2 - argument names | "$?"
| return exit status from last command | $(expr)
| evaluate expr and store it's result |
systemcat /proc/cpuinfo #or lscpu
| cpu informations | uname -a
| OS informations | ss -tpln
| show forwarded ports | lsblk -S
| list block devices -S for minimal view | dd if=/path/to/image.iso of=/drive/location bs=4M && sync
| create bootable drive from image.iso | sudo mount [drive] [mountpoint]
| mounts drive at mountpoint | kill -9 $(pgrep -f [pattern])
| terminate all processes matching pattern |
gitgit rm -r --cached <path/file.ext>
| remove untracked files | git clean -d -(n/f)
| remove undone changes add: -n to show files to remove or -f to remove them | git fetch --all [branch_name]
| copies all changes from last pull/clone on current branch or given branch name | git log --not --remotes
| all commits on all branches that aren't pushed yet | git checkout -b <new_branch>
| change & create new branch | git switch -c <new_branch>
| same as above |
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