Results for “Linux Commands”
Small, practical examples. Search by task or narrow things down below.
Add calendar days with GNU date
Linux Commands: Anchor date arithmetic at a fixed UTC date to avoid local daylight-saving ambiguity.
Linux Commands✓ Tested
Append a line to a practice file
Linux Commands: Append a line to a practice file using GNU/Linux commands in an empty practice directory.
Linux Commands✓ Tested
Append a new member to an uncompressed tar
Linux Commands: Use tar -r for an existing uncompressed archive; compressed tar files cannot be appended this way.
Linux Commands✓ Tested
Append a stream to a log file
Linux Commands: Use tee -a to preserve existing log contents.
Linux Commands✓ Tested
Archive filenames safely with null delimiters
Linux Commands: Use find -print0 with tar --null to preserve spaces and embedded newlines in filenames.
Linux Commands✓ Tested
Bound a command execution time
Linux Commands: Use timeout and handle status 124 as an expected time limit.
Linux Commands✓ Tested
Branch on a command’s exit status
Linux Commands: Branch on a command’s exit status using GNU/Linux commands in an empty practice directory.
Linux Commands✓ Tested
Branch on whether a pattern exists
Linux Commands: Use grep -q in a conditional so an ordinary no-match result is not an unhandled failure.
Linux Commands✓ Tested
Check the integrity of a gzip stream
Linux Commands: Use gzip -t to verify a compressed file without extracting it.
Linux Commands✓ Tested
Check whether a file is already sorted
Linux Commands: Use sort -C for a quiet status check that does not rewrite the file.
Linux Commands✓ Tested
Check whether two practice files match
Linux Commands: Check whether two practice files match using GNU/Linux commands in an empty practice directory.
Linux Commands✓ Tested
Collapse repeated spaces
Linux Commands: Use tr -s when repeated occurrences of a character should become one.
Linux Commands✓ Tested