/bin/sh file_path="/path/to/file.txt" if [ -f "$file_path" ]; then echo "File exists." else echo "File does not exist." fi 通过以上信息,你应该能够理解sh命令的基础概念,它的优势,应用场景,以及如何解决一些常见问题。 页面内容是否对你有帮助?
: ${GIT_ALLOW_PROTOCOL=file:git:http:https:ssh} export GIT_ALLOW_PROTOCOL command= branch= force= reference= cached= recursive= init= files= remote= nofetch= update= prefix= custom_name= depth= progress= die_if_unmatched () ...
if exists_but_not_writable "${HOMEBREW_CACHE}"; then execute_sudo "/bin/chmod" "g+rwx" "${HOMEBREW_CACHE}" fi if file_not_owned "${HOMEBREW_CACHE}"; then execute_sudo "$CHOWN" "-R" "$USER" "${HOMEBREW_CACHE}" fi if file_not_grpowned "${HOMEBREW_CACHE}"; then ...
fatal error: sys/videoio.h: No such file or directory 2019-12-10 15:25 −Determining if the include file sys/videoio.h exists failed with the following output:Change Dir: /home/program/opencv-3.2.0/build/CMakeFiles/CMakeTmpR... ...
$ if contains 'user' ${!URL_PARAMS[@]} && file_exists "users/${URL_PARAMS['user']}" $ then $ local username=$(head -n 1 users/${URL_PARAMS['user']}); $ echo "${username}'s posts:"; $ echo ""; $ get_users_posts "${username}" | while read -r post; do $ po...
if (exists $py2ph{$A[$i]}) { push(@entry, @{$py2ph{$A[$i]}}); } else {push(@entry, $A[$i])}; } print "@entry"; print "\n"; } ' $dict_dir/map/cmu-cmu > $dict_dir/lexicon-en/lexicon-en.txt # 10)中文大辞典:一个大词典,里面有词,有拼音,有解释 ...
If the uFlags parameter includes the SHGFI_USEFILEATTRIBUTES flag, this parameter does not have to be a valid file name. The function will proceed as if the file exists with the specified name and with the file attributes passed in the dwFileAttributes parameter. This allows you to obtain inf...
if (lGlobalSettingsCounter == SHGlobalCounterGetValue(GLOBALCOUNTER_SHELLSETTINGSCHANGED)) { // Commit the work that was done earlier ... } else { // Shell settings have changed. Rollback and redo. ... } } 要求 展开表 要求值 最低受支持的客户端 Windows 7 [仅限桌面应用] 最低受...
git clone https://github.com/sh1yo/x8 cd x8 cargo build --release # move the binary to $PATH so you can use it without specifying the full path cp ./target/release/x8 /usr/local/bin # if it says that /usr/local/bin doesn't exists you can try # sudo cp ./target/release/x8 ...
--server-public-key-path=file_name MySQL Shell equivalent of--server-public-key-path. If--server-public-key-path=file_nameis given and specifies a valid public key file, it takes precedence over--get-server-public-key. Important Only supported with classic MySQL protocol connections. ...