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February 14, 2019 07:11
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| 1. scp command (SecureCoPy file/directory over ssh) | |
| a. Copy from local to remote server | |
| scp /absolute/path/on/local/to/file.txt <user>@<server-ip>:/absolute/path/to/file.txt | |
| b. Copy from server to local | |
| scp <user>@<server-ip>:/absolute/path/to/file.txt /absolute/path/on/local/to/file.txt | |
| c. Copy directories (recursive) | |
| scp -r <user>@<server-ip>:/absolute/path/to/directory/ /absolute/path/on/local/to/directory/ | |
| 2. sed command (Stream EDitor - to search/replace/delete in files) | |
| a. Search and replace in file | |
| sed -i 's=<string to search>=<string to replace with if the search string is found>gI' filename.ext | |
| sed -i 's=/string/to/search=/string/to/replace=gI' *.ext | |
| Here, | |
| -i for performing operations In file | |
| s means Search and replace | |
| = is the delimiter (whatever follows s is assumed to be the delimiter. | |
| Didn't use the most common '/' delimiter here since it is present in the search and replace strings | |
| and adding escape characters in search strings makes them confusing) | |
| g means to replace the searched string Globally and not just the first occurence | |
| I means the search is case-insensitive. | |
| b. Delete first/last line in file | |
| sed -i '1d' filename.ext //deletes 1st line | |
| sed -i '$d' filename.ext //deletes last line | |
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