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# Bash scripting
## String manipulation
Remove shortest from end
${VAR%substr}
# e.g.
${FILEPATH%.*}.out # change extension from whatever to .out
Remove longest from start
${VAR##substr}
# e.g.
${FILEPATH##*/} # get only file name portion
%% - longst from end, # - shortest from start
## Control flow
Loop over files
for file in glob/*; do something $file; done
Loop over integers
for i in `seq 10`; do echo $i; done
## Conditionals
* `-z`: is empty string
* `-n`: non-empty string
* `-f`: is regular file
* `$A == $B`: string equality, accepts globs
* `$A != $B`: string inequality
## Heredocs
cat << EOF > file
bla bla
EOF
Ignoring the initial indent:
...
cat <<- EOF > file
bla bla
EOF
...
Don't interpolate variables:
cat << 'EOF' > file
bla bla
EOF
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