HPR4113: Today I Learnt, sed hold/pattern space use.

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Today I Learnt, sed hold/pattern space use.

Sgoti talks about using sed hold/pattern spaces.

• Tags: TIL, sed

I fixed the ${ls} /usr/bin to ${ls} ${bindir} issue mentioned in the show.

#!/bin/bash # License: GPL v3 # This program is free software: you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation, either version 3 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program. If not, see . #Name: grab-bin.sh #Purpose: Link your binaries. #Version: beta 0.07 #Author: SGOTI (Some Guy On The Internet) #Date: 2023-12-17 #variables: bindir=/usr/bin/ awk=${bindir}awk cat=${bindir}cat chmod=${bindir}chmod date=${bindir}date echo=${bindir}echo find=${bindir}find ls=${bindir}ls mktemp=${bindir}mktemp sed=${bindir}sed uniq=${bindir}uniq #start: ${echo} -e "\nStep 0: $(${date} +%F), $(${date} +%T)"; # Create the /tmp/ directory to place the files. function mkt (){ if [ -d /tmp/$(${date} +%F).* ]; then tmpdir1=$(ls -d /tmp/$(${date} +%F).*) ${echo} -e "The directory already exists.\n${tmpdir1}" else tmpdir0=$(${mktemp} -d /tmp/$(${date} +%F).XXXXXXXX) tmpdir1=${tmpdir0} ${find} "${tmpdir1}" -type d -exec ${chmod} -R =700 {} +; ${echo} "Had to create ${tmpdir1}" fi } mkt ${echo} -e "\nStep 1: $(${date} +%F), $(${date} +%T)"; # Files created by this script. tmpdoc0=${tmpdir1}/$(${date} +%Y%m%d)variables.txt tmpdoc1=${tmpdir1}/$(${date} +%Y%m%d)bash.vim tmpdoc2=${tmpdir1}/$(${date} +%Y%m%d)sed-script.sed # Here-document to build the first document (variables.txt). ${cat} > ${tmpdoc0} << "EOL0" bindir=/usr/bin/ EOL0 # variables.txt body. ${ls} -1 ${bindir} | ${sed} -n ' h s/[^0-9a-zA-Z]//g G s/\n/ / s/(.*) (.*)/1=${bindir}2/p ' >> ${tmpdoc0} ${sed} -i '/[/d' ${tmpdoc0} ${echo} -e "\nStep 2: $(${date} +%F), $(${date} +%T)"; # Bash.vim here-document. ${cat} > ${tmpdoc1} << "EOL1" iabbr case; case ${var_name} in [yY]) ${echo} 'User said, "Yes"'; ;; [nN]) ${echo} 'User said, "No"'; ;; [qQ]) ${echo} "Let's get outta here."; exit ;; *) ${echo} "Good Heavens! Someone broke the script I'm writing."; exit ;; esac iabbr here; ${cat} << _EOD__EOD_2k0 iabbr func function NAME () {} iabbr if; if []; thenIelse${echo} "Good Heavens!"Ifi4k0A iabbr ali; alias NAME=''B iabbr ; () EOL1 # bash.vim body. ${ls} -1 ${bindir} | ${sed} -n ' { h s/[^0-9a-zA-Z]//g G s/\n/ / s/(.*) (.*)/iabbr 1 ${2}/p } ' >> ${tmpdoc1} # Bash.vim here-document second pass. ${cat} >> ${tmpdoc1} << EOL1-5 iabbr vars; bindir=/usr/bin/ EOL1-5 # bash.vim body second pass. ${ls} -1 ${bindir} | ${sed} -n ' { h s/[^0-9a-zA-Z]//g G s/\n/ / s/(.*) (.*)/\1=${bindir}2/p } ' >> ${tmpdoc1} ${sed} -i '/{[}/d; /${bindir}[/d' ${tmpdoc1} ${echo} -e "\nStep 3: $(${date} +%F), $(${date} +%T)"; # Sed script here-document. ${cat} > ${tmpdoc2} << "EOL2" #!/usr/bin/sed -f EOL2 # Sed script body. ${ls} -1 ${bindir} | ${sed} -n ' h s/[^0-9a-zA-Z]//g G s/\n/ / s/(.*) (.*)/s/\<2\>/${1}/g/p ' >> ${tmpdoc2} ${sed} -i '/[/d' ${tmpdoc2} ${find} "${tmpdir1}" -type d -exec chmod -R =700 {} +; ${find} "${tmpdir1}" -type f -exec chmod -R =600 {} +; ${echo} -e "\nStep 4: $(${date} +%F), $(${date} +%T)"; exit; 

• Source: In-Depth Series: Learning sed
• Source: In-Depth Series: Today I Learnt

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