Detailed explanation of Linux one-line command to process batch files

Preface

The best method may not be the one you can think of the fastest. Scripts for temporary use at work do not need to be robust, and the faster they are written, the better. Here is a technique for using the sed command to construct commands to process batch files for reference.

Demand Case 1

Copy all 0_80_91.txt, 0_80_92.txt, 0_80_93.txt, etc. in the current directory. . . The file names of dozens of files were changed to 0_81_91.txt, 0_81_92.txt, 0_81_93.txt, etc. That is, change 80 in the file name to 81.

The implementation command is: ls *.txt |sed -nr 's/(0_)(80)(.*)/mv \1\2\3 \181\3/gp' | sh

#ls *.txt 
0_80_91.txt 0_80_92.txt 0_80_93.txt
#ls *.txt |sed -nr 's/(0_)(80)(.*)/mv \1\2\3 \181\3/gp'
mv 0_80_91.txt 0_81_91.txt
mv 0_80_92.txt 0_81_92.txt
mv 0_80_93.txt 0_81_93.txt
#ls *.txt |sed -nr 's/(0_)(80)(.*)/mv \1\2\3 \181\3/gp' | sh
#ls *.txt
0_81_91.txt 0_81_92.txt 0_81_93.txt

Demand Case 2

Decompress all 0_80_91.Z, 0_80_92.Z, and 0_80_93.Z files in the current directory using the cc_uncompress command and output them to the specified file. The calling format is cc_uncompress -s 0_80_91.txt -d 1.txt. 1.txt can be any file name.

The implementation command 1 is: ls *.Z | sed -nr 's/(.*)/cc_uncompress -s \1 -d \1.txt/gp'

#ls *.Z | sed -nr 's/(.*)/cc_uncompress -s \1 -d \1.txt/gp'
cc_uncompress -s 0_80_91.Z -d 0_80_91.Z.txt
cc_uncompress -s 0_80_92.Z -d 0_80_92.Z.txt
cc_uncompress -s 0_80_93.Z -d 0_80_93.Z.txt
#ls *.Z | sed -nr 's/(.*)/cc_uncompress -s \1 -d \1.txt/gp' | sh

The implementation of command 2 is: find . -name "*.Z" -exec cc_uncompress -s {} -d {}.bak \;

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